APA (7th ed.) Citation

The new Encyclopaedia Britannica: In 30 vol (15. ed.). Encyclopaedia Britannica.

Chicago Style (17th ed.) Citation

The New Encyclopaedia Britannica: In 30 Vol. 15. ed. Chicago u.a: Encyclopaedia Britannica.

MLA (9th ed.) Citation

The New Encyclopaedia Britannica: In 30 Vol. 15. ed. Encyclopaedia Britannica.

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