APA (7th ed.) Citation

Encyclopedia Britannica. Encyclopedia Britannica 2006. Ultima referencia suite.

Chicago Style (17th ed.) Citation

Encyclopedia Britannica. Encyclopedia Britannica 2006. Ultima Referencia Suite.

MLA (8th ed.) Citation

Encyclopedia Britannica. Encyclopedia Britannica 2006. Ultima Referencia Suite.

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