diff --git a/src/algorithms/math/cartesian-product/README.md b/src/algorithms/math/cartesian-product/README.md
index 208905fe..dd74a758 100644
--- a/src/algorithms/math/cartesian-product/README.md
+++ b/src/algorithms/math/cartesian-product/README.md
@@ -5,6 +5,10 @@ In set theory a Cartesian product is a mathematical operation that returns a set
 the Cartesian product A × B is the set of all ordered pairs (a, b)
 where a ∈ A and b ∈ B. 
 
+Cartesian product `AxB` of two sets `A={x,y,z}` and `B={1,2,3}`
+
 ![Cartesian Product of Two Sets](https://github.com/trekhleb/javascript-algorithms/blob/master/assets/cartesian-product.png)
 
-Image from [Wikipedia](https://en.wikipedia.org/wiki/Cartesian_product)
+## References
+
+[Wikipedia](https://en.wikipedia.org/wiki/Cartesian_product)