Added a citation section

README.md

@@ -19,3 +19,9 @@ Here is an example of the bit board setup this project follows:
 ![bit board](/docs/bitboard.png)
 
 This orientation allows all moves to be done with either a 7 bit or 1 bit rotation.
+
+## Citations
+
+The vast majority of the project is personal work but there were some inspirations and little tricks from various sources. Any code directly copied from a source like StackOverflow is stated inline in comments. An exhaustive list of all sources used is here:
+* [Checkers Bitboard Tutorial](http://www.3dkingdoms.com/checkers/bitboards.htm#movegen)
+* [Compiler Friendly Bit Rotation in C](http://stackoverflow.com/questions/776508/best-practices-for-circular-shift-rotate-operations-in-c)