APA (7th ed.) Citation

Gwinn, R. P. (1989). The New Encyclopaedia Britannica in 32 volumes. Encyclopaedia Britannica Inc.

Chicago Style (17th ed.) Citation

Gwinn, Robert P. The New Encyclopaedia Britannica in 32 Volumes. Encyclopaedia Britannica Inc, 1989.

MLA (8th ed.) Citation

Gwinn, Robert P. The New Encyclopaedia Britannica in 32 Volumes. Encyclopaedia Britannica Inc, 1989.

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