APA (7th ed.) Citation

(2005). Sounds (Britannica Discovery Library). Britannica Encyclopedia,Inc..

Chicago Style (17th ed.) Citation

Sounds (Britannica Discovery Library). London: Britannica Encyclopedia,Inc., 2005.

MLA (9th ed.) Citation

Sounds (Britannica Discovery Library). Britannica Encyclopedia,Inc., 2005.

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