APA (7th ed.) Citation

Grolier Incorporated. (1980). The Encyclopedia Americana (International ed.). Grolier Incorporated.

Chicago Style (17th ed.) Citation

Grolier Incorporated. The Encyclopedia Americana. International ed. Danbury, Conn: Grolier Incorporated, 1980.

MLA (9th ed.) Citation

Grolier Incorporated. The Encyclopedia Americana. International ed. Grolier Incorporated, 1980.

Warning: These citations may not always be 100% accurate.