Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (8a ed.)

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