Gaya APA

Swanson, C, P., Maple, T, L. (1980). Orang-utan behavior . New York: New York: Van Nostrad Reinhold; 1980.

Gaya MLA

Swanson, Carl, P.., Maple, Terry, L. "Orang-utan behavior". New York: New York: Van Nostrad Reinhold; 1980, 1980. Text.