Beckmann, S. (2005). Activities manual to accompany Mathematics for elementary teachers. Pearson/Addison-Wesley.
Cita Chicago (17th ed.)Beckmann, Sybilla. Activities Manual to Accompany Mathematics for Elementary Teachers. Boston: Pearson/Addison-Wesley, 2005.
Cita MLA (9th ed.)Beckmann, Sybilla. Activities Manual to Accompany Mathematics for Elementary Teachers. Pearson/Addison-Wesley, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.