APA (7th ed.) Citation

(1972). The encyclopedia Americana: Complete in 30 volumes (International edition.). Americana Coporation.

Chicago Style (17th ed.) Citation

The Encyclopedia Americana: Complete in 30 Volumes. International edition. New York: Americana Coporation, 1972.

MLA (8th ed.) Citation

The Encyclopedia Americana: Complete in 30 Volumes. International edition. Americana Coporation, 1972.

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