APA (7th ed.) Citation

Goetz, P. W. (1991). The new encyclopaedia Britannica: In 32 volumes. Encyclopaedia Britannica.

Chicago Style (17th ed.) Citation

Goetz, Philip W. The New Encyclopaedia Britannica: In 32 Volumes. Chicago [u.a.]: Encyclopaedia Britannica, 1991.

MLA (9th ed.) Citation

Goetz, Philip W. The New Encyclopaedia Britannica: In 32 Volumes. Encyclopaedia Britannica, 1991.