diff --git a/src/ShipWarfare.java b/src/ShipWarfare.java
index d939d75..e63f64f 100644
--- a/src/ShipWarfare.java
+++ b/src/ShipWarfare.java
@@ -2,6 +2,13 @@ import java.util.Scanner;
 import java.util.Random;
 import java.util.concurrent.TimeUnit;
 
+/*
+
+Learned how to use the Time Unit Class from the following source:
+Slim, and Lalith Verma. “How to Use TimeUnit in Java.” Stack Overflow, 8 Dec. 2017, stackoverflow.com/questions/47717633/how-to-use-timeunit-in-java.
+
+ */
+
 public class ShipWarfare extends Player {
 
     private int numOfPeasantShips = 0;