Gaya APA

Sills, D, L., Swanson, C, P. (NULL). International Encyclopedia of the social sciences volumes 13 and 14 ì psyc to soci complete and unabridged . New: New York: The Mcmillan Co.& The Free Press; 1968.

Gaya MLA

Sills, David, L.., Swanson, Carl, P.. "International Encyclopedia of the social sciences volumes 13 and 14 ì psyc to soci complete and unabridged". New: New York: The Mcmillan Co.& The Free Press; 1968, NULL. Text.