APA (7th ed.) Citation

THE_ENCYCLOPEDIA... (1956). The Encyclopedia Americana: The International reference work. Americana Corporation.

Chicago Style (17th ed.) Citation

THE_ENCYCLOPEDIA... The Encyclopedia Americana: The International Reference Work. Americana Corporation, 1956.

MLA (8th ed.) Citation

THE_ENCYCLOPEDIA... The Encyclopedia Americana: The International Reference Work. Americana Corporation, 1956.

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