Gaya APA

Swanson, C, P., Falk, D. (1971). Biology theaching methods . New York: New York: Robert E. Kreiger; 1971.

Gaya MLA

Swanson, Carl, P.., Falk, Doris. "Biology theaching methods". New York: New York: Robert E. Kreiger; 1971, 1971. Text.