Gaya APA

Incorporated, G. (). Grolier Encyclopedia of Knowledge Volume 8: Fos-Gra (Cet. 1). United States of Ame: Academic American Enyclopedia.

Gaya MLA

Incorporated, Grolier. "Grolier Encyclopedia of Knowledge Volume 8: Fos-Gra". Cet. 1 United States of Ame: Academic American Enyclopedia, . Text.