Gaya APA

Swanson, C, P., L., I, S, D. (1968). International encyclopedia of the social sciences volume 15 . New York: New York: The Macmillan Co. & The Free Press; 1968.

Gaya MLA

Swanson, Carl, P.., L., I., Sills,, David. "International encyclopedia of the social sciences volume 15". New York: New York: The Macmillan Co. & The Free Press; 1968, 1968. Text.