APA (7th ed.) Citation

Reys, R. E. (2004). Helping children learn mathematics: Robert E. Reys ... [et al.] (7th ed.). John Wiley and Sons.

Chicago Style (17th ed.) Citation

Reys, Robert E. Helping Children Learn Mathematics: Robert E. Reys ... [et Al.]. 7th ed. Hoboken, New Jersey: John Wiley and Sons, 2004.

MLA (9th ed.) Citation

Reys, Robert E. Helping Children Learn Mathematics: Robert E. Reys ... [et Al.]. 7th ed. John Wiley and Sons, 2004.