Gaya APA

Sills, D, L. (). International Encyclopedia of the Social Sciences: 15-16 (Soci to Zoos) . NEW YORK: The Macmillan & The Free.

Gaya MLA

Sills, David, L.. "International Encyclopedia of the Social Sciences: 15-16 (Soci to Zoos)". NEW YORK: The Macmillan & The Free, . Text.