APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (8e ed.) Bronvermelding

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