Gaya APA

Swanson, C, P., Sills, D, L. (NULL). International Encyclopedia of the social sciences volumes 3 and 4 ì colo to flas complete and unabridged . New: New York: The Mcmillan Co.& The Free Press; 1968.

Gaya MLA

Swanson, Carl, P.., Sills, David, L.. "International Encyclopedia of the social sciences volumes 3 and 4 ì colo to flas complete and unabridged". New: New York: The Mcmillan Co.& The Free Press; 1968, NULL. Text.