Gaya APA

Alyea, H, . (1956). Collier's Encyclopedia 7 (Ed. 7). New York: P. F. Collier & Son Cosporation.

Gaya MLA

Alyea, Hubert, . "Collier's Encyclopedia 7". Ed. 7 New York: P. F. Collier & Son Cosporation, 1956. Buku Pend. Sejarah.