Gaya APA

Corporation, A. (New York : First Pub). The Encyclopedia Americana. Volume 20 (International). New York : First Published, 19: New York : First Published, 1968.

Gaya MLA

Corporation, Americana. "The Encyclopedia Americana. Volume 20". International New York : First Published, 19: New York : First Published, 1968, New York : First Pub. Text.