APA (7th ed.) Citation

(2010). The new encyclopaedia Britannica: Propaedia outline of knowledge: Guide to the Britanica (15th ed.). Encyclopaedia Britanica Inc..

Chicago Style (17th ed.) Citation

The New Encyclopaedia Britannica: Propaedia Outline of Knowledge: Guide to the Britanica. 15th ed. Chicago: Encyclopaedia Britanica Inc., 2010.

MLA (9th ed.) Citation

The New Encyclopaedia Britannica: Propaedia Outline of Knowledge: Guide to the Britanica. 15th ed. Encyclopaedia Britanica Inc., 2010.

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