Added reference to K&R

processes.html

@@ -565,6 +565,7 @@ <h3> CPU </h3>
 
     <h3>Suggested Reading</h3>
     <ul>
+        <li><a href="https://en.wikipedia.org/wiki/The_C_Programming_Language">The C Programming Language</a> by Brian Kernighan and Dennis Ritchie</li>
         <li><a href="https://pages.cs.wisc.edu/~remzi/OSTEP/">Operating Systems: Three Easy Pieces</a> by Remzi H. Arpaci-Dusseau and Andrea C. Arpaci-Dusseau </li>
         <li><a href="https://csapp.cs.cmu.edu/">Computer Systems: A Programmer's Perspective</a> by Randal E. Bryant and David R. O'Hallaron</li>
     </ul>