Beckmann, S. (2005). Activities manual to accompany Mathematics for elementary teachers. Pearson/Addison-Wesley.
Lua i Stíl Chicago (17ú heag.)Beckmann, Sybilla. Activities Manual to Accompany Mathematics for Elementary Teachers. Boston: Pearson/Addison-Wesley, 2005.
Lua MLA (9ú heag.)Beckmann, Sybilla. Activities Manual to Accompany Mathematics for Elementary Teachers. Pearson/Addison-Wesley, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.