APA (7th ed.) Citation

(1974). The new Encyclopaedia Britannica IV. William Benton Publishers.

Chicago Style (17th ed.) Citation

The New Encyclopaedia Britannica IV. William Benton Publishers, 1974.

MLA (9th ed.) Citation

The New Encyclopaedia Britannica IV. William Benton Publishers, 1974.

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