diff --git a/src/algorithms/string/rabin-karp/README.md b/src/algorithms/string/rabin-karp/README.md
index 40d29a55..800ec5b8 100644
--- a/src/algorithms/string/rabin-karp/README.md
+++ b/src/algorithms/string/rabin-karp/README.md
@@ -21,4 +21,5 @@ strings, single-string searching algorithms are impractical.
 
 ## References
 
-[Wikipedia](https://en.wikipedia.org/wiki/Rabin%E2%80%93Karp_algorithm)
+- [Wikipedia](https://en.wikipedia.org/wiki/Rabin%E2%80%93Karp_algorithm)
+- [YouTube](https://www.youtube.com/watch?v=H4VrKHVG5qI)