diff --git a/its-surabaya-disertasi.csl b/its-surabaya-disertasi.csl
new file mode 100644
index 0000000000..43da60922b
--- /dev/null
+++ b/its-surabaya-disertasi.csl
@@ -0,0 +1,174 @@
+<?xml version="1.0" encoding="utf-8"?>
+<style xmlns="http://purl.org/net/xbiblio/csl" class="in-text" version="1.0" demote-non-dropping-particle="sort-only" default-locale="id-ID">
+  <info>
+    <title>Institut Teknologi Sepuluh Nopember (author-date, Indonesian)</title>
+    <title-short>ITS Style</title-short>
+    <id>http://www.zotero.org/styles/its-surabaya-disertasi</id>
+    <link href="http://www.zotero.org/styles/its-surabaya-disertasi" rel="self"/>
+    <link href="http://www.zotero.org/styles/harvard-cite-them-right" rel="template"/>
+    <link href="https://drive.google.com/file/d/1BBvh0FpyJdPDY7oS_yRyV_V66hESyG6I/view" rel="documentation"/>
+    <author>
+      <name>Nur Hadi(Customized for Institut Teknologi Sepuluh Nopember)</name>
+      <uri>https://orcid.org/0009-0009-6062-1945</uri>
+    </author>
+    <category citation-format="author-date"/>
+    <category field="generic-base"/>
+    <summary>Custom Harvard style for ITS Surabaya Dissertation in Indonesian.</summary>
+    <updated>2026-04-18T00:00:00+00:00</updated>
+    <rights license="http://creativecommons.org/licenses/by-sa/3.0/">This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 License</rights>
+  </info>
+  <locale xml:lang="id-ID">
+    <terms>
+      <term name="page" form="short">hal.</term>
+      <term name="editor" form="short">
+        <single>ed.</single>
+        <multiple>eds.</multiple>
+      </term>
+      <term name="in">dalam</term>
+      <term name="no date">t.t.</term>
+      <term name="volume" form="short">Vol.</term>
+      <term name="issue" form="short">No.</term>
+    </terms>
+  </locale>
+  <macro name="author">
+    <names variable="author">
+      <name and="text" delimiter-precedes-last="never" initialize-with="." name-as-sort-order="all"/>
+      <label form="short" prefix=" (" suffix=")"/>
+      <substitute>
+        <names variable="editor"/>
+        <names variable="translator"/>
+        <text macro="title"/>
+      </substitute>
+    </names>
+  </macro>
+  <macro name="author-short">
+    <names variable="author">
+      <name form="short" and="text" delimiter=", " delimiter-precedes-last="never" initialize-with=". "/>
+      <et-al font-style="italic"/>
+      <substitute>
+        <names variable="editor"/>
+        <names variable="translator"/>
+        <text macro="title"/>
+      </substitute>
+    </names>
+  </macro>
+  <macro name="year-date">
+    <choose>
+      <if variable="issued">
+        <date variable="issued">
+          <date-part name="year"/>
+        </date>
+        <text variable="year-suffix"/>
+      </if>
+      <else>
+        <text term="no date" form="short"/>
+        <text variable="year-suffix" prefix=" "/>
+      </else>
+    </choose>
+  </macro>
+  <macro name="title">
+    <choose>
+      <if type="book thesis report graphic" match="any">
+        <text variable="title" font-style="italic" text-case="title"/>
+      </if>
+      <else>
+        <text variable="title" quotes="true" text-case="title"/>
+      </else>
+    </choose>
+  </macro>
+  <macro name="container-title">
+    <choose>
+      <if variable="container-title">
+        <text variable="container-title" font-style="italic" text-case="title"/>
+      </if>
+    </choose>
+  </macro>
+  <macro name="editor">
+    <names variable="editor translator">
+      <label form="short" suffix=" "/>
+      <name and="text" initialize-with="." delimiter=", "/>
+    </names>
+  </macro>
+  <macro name="publisher">
+    <choose>
+      <if type="thesis">
+        <group delimiter=", ">
+          <text variable="genre"/>
+          <text variable="publisher"/>
+          <text variable="publisher-place"/>
+        </group>
+      </if>
+      <else>
+        <group delimiter=", ">
+          <text variable="publisher"/>
+          <text variable="publisher-place"/>
+        </group>
+      </else>
+    </choose>
+  </macro>
+  <macro name="locators">
+    <choose>
+      <if type="article-journal article-magazine">
+        <group delimiter=", ">
+          <group delimiter=" ">
+            <text term="volume" form="short"/>
+            <text variable="volume"/>
+          </group>
+          <group delimiter=" ">
+            <text term="issue" form="short"/>
+            <text variable="issue"/>
+          </group>
+        </group>
+      </if>
+    </choose>
+  </macro>
+  <macro name="pages">
+    <group delimiter=" ">
+      <label variable="page" form="short"/>
+      <text variable="page"/>
+    </group>
+  </macro>
+  <citation et-al-min="3" et-al-use-first="1" disambiguate-add-year-suffix="true" collapse="year">
+    <sort>
+      <key macro="year-date"/>
+    </sort>
+    <layout prefix="(" suffix=")" delimiter="; ">
+      <group delimiter=", ">
+        <text macro="author-short"/>
+        <text macro="year-date"/>
+        <group delimiter=" ">
+          <label variable="locator" form="short"/>
+          <text variable="locator"/>
+        </group>
+      </group>
+    </layout>
+  </citation>
+  <bibliography hanging-indent="true" entry-spacing="1">
+    <sort>
+      <key macro="author"/>
+      <key macro="year-date"/>
+    </sort>
+    <layout suffix=".">
+      <text macro="author"/>
+      <text macro="year-date" prefix=" (" suffix="), "/>
+      <group delimiter=", ">
+        <text macro="title"/>
+        <choose>
+          <if type="chapter paper-conference" match="any">
+            <group delimiter=" ">
+              <text term="in"/>
+              <text macro="container-title"/>
+            </group>
+            <text macro="editor"/>
+          </if>
+          <else>
+            <text macro="container-title"/>
+          </else>
+        </choose>
+        <text macro="locators"/>
+        <text macro="publisher"/>
+        <text macro="pages"/>
+      </group>
+    </layout>
+  </bibliography>
+</style>