Cita APA (7th ed.)

Reys, R. E., Suydam, M. N., & Linquist, M. M. (1992). Helping children learn mathematics (3rd ed.). Allyn and Bacon.

Cita Chicago (17th ed.)

Reys, Robert E., Marilyn N. Suydam, i Mary M. Linquist. Helping Children Learn Mathematics. 3rd ed. Boston: Allyn and Bacon, 1992.

Cita MLA (9th ed.)

Reys, Robert E., et al. Helping Children Learn Mathematics. 3rd ed. Allyn and Bacon, 1992.