APA Style

INC, C, W, P, ,. (1971). lllustrated world of Science Encyclopedia (1). CHIAGO: CREATIV WORLD PUBLIATOS HNC.

MLA Style

INC, CREATIVE, WORLD, PUBLICATIONS, ,. "lllustrated world of Science Encyclopedia". 1 CHIAGO: CREATIV WORLD PUBLIATOS HNC, 1971. المصادر المراجع.