APA (7th ed.) Citation

(1990). The encyclopedia Americana (International edition.). Grolier Incorporated.

Chicago Style (17th ed.) Citation

The Encyclopedia Americana. International edition. Connecticut: Grolier Incorporated, 1990.

MLA (9th ed.) Citation

The Encyclopedia Americana. International edition. Grolier Incorporated, 1990.

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