Gaya APA

, ., Sills, D, L. (). International Encyclopedia of the social sciences volumes 15 16 and 17 soci zoos index complete and unabridged . New: New York: The Mcmillan Co.& The Free Press; 1968.

Gaya MLA

, ., Sills, David, L.. "International Encyclopedia of the social sciences volumes 15 16 and 17 soci zoos index complete and unabridged". New: New York: The Mcmillan Co.& The Free Press; 1968, . Text.