Παραπομπή APA

Sills, D. L. (1968). International Encyclopedia of Social Sciences. Macmillan.

Παραπομπή Chicago Style

Sills, David L. International Encyclopedia of Social Sciences. New York: Macmillan, 1968.

Παραπομπή MLA

Sills, David L. International Encyclopedia of Social Sciences. Macmillan, 1968.