APA (7th ed.) Citation

(1963). The Encyclopedia Americana: International edition : first published in 1829 : Complete in thirty volumes. Americana Corporation.

Chicago Style (17th ed.) Citation

The Encyclopedia Americana: International Edition : First Published in 1829 : Complete in Thirty Volumes. New York: Americana Corporation, 1963.

MLA (9th ed.) Citation

The Encyclopedia Americana: International Edition : First Published in 1829 : Complete in Thirty Volumes. Americana Corporation, 1963.