Update index.html

index.html

@@ -41,6 +41,7 @@ <h2>Introduction to Programming</h2>
     <li><b><a style="text-decoration:none" href="https://farid.berkeley.edu/downloads/tutorials/learnPython/" target="_blank">Introduction to Programming and Computation</a></b></li>    
     <li><b><a style="text-decoration:none" href="https://greenteapress.com/wp/think-python-2e/" target="_blank">Think Python - How to think like a Computer Scientist</a></b></li>
     <li><a style="text-decoration:none" href="https://www.amazon.com.au/Introduction-Computation-Programming-Using-Python/dp/0262542366/" target="_blank">Introduction to Computation and Programming Using Python</a></li>
+    <li><a style="text-decoration:none" href="https://mcsp.wartburg.edu/zelle/python/" target="_blank">Python Programming: An Introduction to Computer Science</a></li>
   </ul>
   <br>
   <hr>