Cita APA

Sperry Smith, S. (1997). Early childhood mathematics. Boston: Allyn and Bacon.

Chicago Style Citation

Sperry Smith, Susan. Early Childhood Mathematics. Boston: Allyn and Bacon, 1997.

Cita MLA

Sperry Smith, Susan. Early Childhood Mathematics. Boston: Allyn and Bacon, 1997.

Atenció: Aquestes cites poden no estar 100% correctes.