diff --git a/core-java-modules/core-java-string-operations-3/README.md b/core-java-modules/core-java-string-operations-3/README.md
index 4e46849c11..7f391ee056 100644
--- a/core-java-modules/core-java-string-operations-3/README.md
+++ b/core-java-modules/core-java-string-operations-3/README.md
@@ -1,3 +1,4 @@
 ### Relevant Articles:
 
 - [Version Comparison in Java](https://www.baeldung.com/java-comparing-versions)
+- [Java (String) or .toString()?](https://www.baeldung.com/java-string-casting-vs-tostring)