APA (7th ed.) Citation

(2005). My First Britannica vol. 13: References Guide And Index. Encyclopaedia Britannica Inc..

Chicago Style (17th ed.) Citation

My First Britannica Vol. 13: References Guide And Index. London: Encyclopaedia Britannica Inc., 2005.

MLA (9th ed.) Citation

My First Britannica Vol. 13: References Guide And Index. Encyclopaedia Britannica Inc., 2005.

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