Gaya APA

Sills, D, L. (). International Encyclopedia of the Social Sciences: 13-14 (Psyc to Soci) . NEW YORK: The Macmillan & The Free.

Gaya MLA

Sills, David, L.. "International Encyclopedia of the Social Sciences: 13-14 (Psyc to Soci)". NEW YORK: The Macmillan & The Free, . Text.