APA (7th ed.) Citation

Hunting, R. P., & Davis, G. E. (1991). Early fraction learning. Springer-Verlag.

Chicago Style (17th ed.) Citation

Hunting, Robert P., and Gary E. Davis. Early Fraction Learning. New York: Springer-Verlag, 1991.

MLA (9th ed.) Citation

Hunting, Robert P., and Gary E. Davis. Early Fraction Learning. Springer-Verlag, 1991.