Gaya APA

Alyea, H, . (1956). Collier's Encyclopedia 2 (Ed. 2). NewYork: P. F. Collier & Son Cosporation.

Gaya MLA

Alyea, Hubert, . "Collier's Encyclopedia 2". Ed. 2 NewYork: P. F. Collier & Son Cosporation, 1956. Buku Pend. Sejarah.