Gaya APA

Swanson, C, P., May, L, J. (1974). Teaching mathematics in the elementary school . New York: New York: The Free Press; 1974.

Gaya MLA

Swanson, Carl, P.., May, Lola, June. "Teaching mathematics in the elementary school". New York: New York: The Free Press; 1974, 1974. Text.