APA (7th ed.) Citation

Swain, R. L., & Nichols, E. D. (1965). Understanding arithmetic. Rinehart and Winston.

Chicago Style (17th ed.) Citation

Swain, Robert Lomond, and Eugene Douglas Nichols. Understanding Arithmetic. New York: Rinehart and Winston, 1965.

MLA (9th ed.) Citation

Swain, Robert Lomond, and Eugene Douglas Nichols. Understanding Arithmetic. Rinehart and Winston, 1965.