Gaya APA

Swanson, C, P., Swenson, E, J. (1973). Teaching mathematics to schildren . New York: New York: Macmillan; 1973.

Gaya MLA

Swanson, Carl, P.., Swenson, Esther, J. "Teaching mathematics to schildren". New York: New York: Macmillan; 1973, 1973. Text.