Gaya APA

Sills, D, L. (1972). International Encyclopedia of Social Science ; Volume 15, 16, 17 ; SOCI to ZOOS ; INDEX . New York: The Macmillan Company & Free Press.

Gaya MLA

Sills, David, L.. "International Encyclopedia of Social Science ; Volume 15, 16, 17 ; SOCI to ZOOS ; INDEX". New York: The Macmillan Company & Free Press, 1972. Referensi.