Gaya APA

Sills, D, L. (1968). International Encyclopedia Of the Social Sciences Volumes 5 and 6 Complete and Unabridged . New York: The Macmillan Company.

Gaya MLA

Sills, David, L. "International Encyclopedia Of the Social Sciences Volumes 5 and 6 Complete and Unabridged". New York: The Macmillan Company, 1968. .