Gaya APA

Alyea, H, . (1956). Collier's Encyclopedia 12 (Ed. 12). New York: P. F. Collier & Son Cosporation.

Gaya MLA

Alyea, Hubert, . "Collier's Encyclopedia 12". Ed. 12 New York: P. F. Collier & Son Cosporation, 1956. Buku Pend. Sejarah.