diff --git a/README.md b/README.md
index 7fb4033..534897b 100644
--- a/README.md
+++ b/README.md
@@ -24,8 +24,14 @@
 0880:00 00 00 
 ```
 
+# License
+
+[WTFPL](http://www.wtfpl.net/)
+
 # References
 
+* [printm](https://github.com/Michaelangel007/apple2_printm)
+
 Apple Monitor: Print Integer?
 * https://groups.google.com/forum/m/#!topic/comp.sys.apple2/EQmJAuNz8Vg