diff --git a/.gitmodules b/.gitmodules
index 3b0e585..9108e02 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -41,4 +41,7 @@
 [submodule "book/external/annotater"]
 	path = book/external/annotater
 	url = https://github.com/TeachBooks/annotater
-        branch = manual
\ No newline at end of file
+[submodule "book/external/Sphinx-launch-buttons"]
+	path = book/external/Sphinx-launch-buttons
+	url = https://github.com/TeachBooks/Sphinx-launch-buttons.git
+        branch = manual
diff --git a/LICENSE b/LICENSE
index 0131ab3..f14b8e1 100644
--- a/LICENSE
+++ b/LICENSE
@@ -392,7 +392,7 @@ Creative Commons may be contacted at creativecommons.org.
 
 =======================================================================
 
-[](external/annotater), [](external/deploy-book-workflow), [](external/Download-Link-Replacer), [](external/JupyterBook-Patches), [](external/Sphinx-Image-Inverter) and [](external/Useful_python_code) are licensed under BSD 3-Clause license:
+[](external/annotater), [](external/deploy-book-workflow), [](external/Download-Link-Replacer), [](external/JupyterBook-Patches), [](external/Sphinx-Image-Inverter), [](external/Sphinx-launch-buttons) and [](external/Useful_python_code) are licensed under BSD 3-Clause license:
 
 BSD 3-Clause License
 
diff --git a/book/_toc.yml b/book/_toc.yml
index 790c6d2..2a1845c 100644
--- a/book/_toc.yml
+++ b/book/_toc.yml
@@ -57,7 +57,7 @@ parts:
     - file: features/sphinx_extensions.md
       sections: 
       - file: external/Download-Link-Replacer/README.md
-      - file: features/custom-launch-button.md
+      - file: external/Sphinx-launch-buttons/README.md
       - file: basic-features/utterances.md      
       - file: features/interactive_element.ipynb
         sections:
diff --git a/book/credits.md b/book/credits.md
index 443e088..7f04a41 100644
--- a/book/credits.md
+++ b/book/credits.md
@@ -48,6 +48,7 @@ The following pages are included directly from an external resource and is not e
 - Page [](./external/Nested-Books/README.md). Original content licensed under CC BY 4.0 license.
 - Page [](./external/Sphinx-Grasple-public/README.md). Original content licensed under MIT license.
 - Page [](./external/Sphinx-Image-Inverter/README.md). Original content licensed under BSD 3-Clause license.
+- Page [](./external/Sphinx-launch-buttons/README.md). Original content licensed under BSD 3-Clause license.
 - Page [](./external/Sphinx-TUDelft-theme/README.md). Original content licensed under MIT license.
 - Page [](./external/teachbooks-sphinx-tippy/README.md). Original content licensed under MIT license.
 - Page [](./external/template/README.md). Original content licensed under CC BY 4.0 license.
diff --git a/book/external/Sphinx-launch-buttons b/book/external/Sphinx-launch-buttons
new file mode 160000
index 0000000..8cfd0ba
--- /dev/null
+++ b/book/external/Sphinx-launch-buttons
@@ -0,0 +1 @@
+Subproject commit 8cfd0ba7ae24c17e51ac0b1924473a908d4062ac
diff --git a/book/references.bib b/book/references.bib
index 731967f..6ab40b9 100644
--- a/book/references.bib
+++ b/book/references.bib
@@ -117,4 +117,12 @@
   url          = {https://github.com/TeachBooks/Useful_python_code},
   year         = {2024},
   note         = {Retrieved December, 2024. BSD-3-Clause.}
+}
+
+@misc{launch_buttons,
+  author       = {{TeachBooks}},
+  title        = {Custom launch buttons},
+  url          = {https://github.com/TeachBooks/Sphinx-launch-buttons},
+  year         = {2024},
+  note         = {Retrieved December, 2024. BSD-3-Clause.}
 }
\ No newline at end of file