diff --git a/README.md b/README.md
index 643877e..3ae25f7 100644
--- a/README.md
+++ b/README.md
@@ -30,9 +30,18 @@ For editing Markdown files locally I recommend [Markdown Viewer](https://chrome.
 
 ## Copyrights
 
+All possible copyrights belong to https://www.interviewbit.com
+
 This is probably the most complete offline collection up to date (~300 documents).
 
-No web scraping involved, almost everything rewritten and/or solved by my bare hands.
+No web scraping involved, everything is rewritten and/or solved by my bare hands.
 
-All possible copyrights belong to https://www.interviewbit.com
+![](https://i.imgur.com/DSXTZlw.jpg)
+
+(Got to 5th place!)
+
+## References
 
+* https://joric.github.io/interviewbit
+* https://github.com/markedjs/marked
+* https://github.com/PrismLibrary/Prism