Gryskevich, K. (2015). Master math: Elementary school math. Cengage Learning PTR.
Lua i Stíl Chicago (17ú heag.)Gryskevich, Kristen. Master Math: Elementary School Math. Boston, Massachusetts: Cengage Learning PTR, 2015.
Lua MLA (9ú heag.)Gryskevich, Kristen. Master Math: Elementary School Math. Cengage Learning PTR, 2015.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.