Gaya APA

Sills, D, L. (). Interantional Encyclopedia of the Social Sciences: 1 and 2 (Abil to Coll) . NEW YORK: The Macmillan and The Fre.

Gaya MLA

Sills, David, L.. "Interantional Encyclopedia of the Social Sciences: 1 and 2 (Abil to Coll)". NEW YORK: The Macmillan and The Fre, . Text.