Gaya APA

Sills, D, L. (). International Encylopedia of the Social Sciences: 11-12 (Nade to Psyc) . NEW YORK: The Macmillan & The Free.

Gaya MLA

Sills, David, L.. "International Encylopedia of the Social Sciences: 11-12 (Nade to Psyc)". NEW YORK: The Macmillan & The Free, . Text.