APA (7th ed.) Citation

Reys, R., Lindquist, M. M., Lambdin, D. V., & Smith, N. L. Helping children learn mathematics (10a ed.).

Chicago Style (17th ed.) Citation

Reys, Robert, Mary M. Lindquist, Diana V. Lambdin, and Nancy L. Smith. Helping Children Learn Mathematics. 10a ed.

MLA (8th ed.) Citation

Reys, Robert, et al. Helping Children Learn Mathematics. 10a ed.