diff --git a/src/.readme b/src/.readme
new file mode 100644
index 0000000000000000000000000000000000000000..cfd4411b3186cdad5a6acbcb9d8add30a0836ae9
--- /dev/null
+++ b/src/.readme
@@ -0,0 +1,7 @@
+Sources
+
+CardStyle Sheet:
+   Hobart and William Smith Colleges
+   link: http://math.hws.edu/javanotes/source/chapter6/cards.png
+   date obtained: 07/04/2021
+