APA (7th ed.) Citation

Grolier Incorporated. (1989). The Encyclopedia Americana (International ed.). Grolier.

Chicago Style (17th ed.) Citation

Grolier Incorporated. The Encyclopedia Americana. International ed. Danbury, Conn.: Grolier, 1989.

MLA (9th ed.) Citation

Grolier Incorporated. The Encyclopedia Americana. International ed. Grolier, 1989.

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