Cita APA

Swain, R. L. (1965). Understanding Arithmetic. New York: Holt, Rinehart and Wiston.

Chicago Style Citation

Swain, Robert L. Understanding Arithmetic. New York: Holt, Rinehart and Wiston, 1965.

Cita MLA

Swain, Robert L. Understanding Arithmetic. New York: Holt, Rinehart and Wiston, 1965.

Atenció: Aquestes cites poden no estar 100% correctes.