Gaya APA

Alyea, H, . (1956). Collier's Encyclopedia 6 (Ed. 6). New York: P. F. Collier & Son Cosporation.

Gaya MLA

Alyea, Hubert, . "Collier's Encyclopedia 6". Ed. 6 New York: P. F. Collier & Son Cosporation, 1956. Buku Pend. Sejarah.