diff --git a/ch03/03_understanding-buffers/understanding-buffers.ipynb b/ch03/03_understanding-buffers/understanding-buffers.ipynb
index 2ded07f..3de4f33 100644
--- a/ch03/03_understanding-buffers/understanding-buffers.ipynb
+++ b/ch03/03_understanding-buffers/understanding-buffers.ipynb
@@ -1,5 +1,24 @@
 {
  "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "<table style=\"width:100%\">\n",
+    "<tr>\n",
+    "<td style=\"vertical-align:middle; text-align:left;\">\n",
+    "<font size=\"2\">\n",
+    "Supplementary code for the <a href=\"http://mng.bz/orYv\">Build a Large Language Model From Scratch</a> book by <a href=\"https://sebastianraschka.com\">Sebastian Raschka</a><br>\n",
+    "<br>Code repository: <a href=\"https://github.com/rasbt/LLMs-from-scratch\">https://github.com/rasbt/LLMs-from-scratch</a>\n",
+    "</font>\n",
+    "</td>\n",
+    "<td style=\"vertical-align:middle; text-align:left;\">\n",
+    "<a href=\"http://mng.bz/orYv\"><img src=\"https://sebastianraschka.com/images/LLMs-from-scratch-images/cover-small.webp\" width=\"100px\"></a>\n",
+    "</td>\n",
+    "</tr>\n",
+    "</table>"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {