APA (7th ed.) Citation

West, K. (2008). Layers of the earth [electronic resource]. Chelsea House.

Chicago Style (17th ed.) Citation

West, Krista. Layers of the Earth [electronic Resource]. New York: Chelsea House, 2008.

MLA (9th ed.) Citation

West, Krista. Layers of the Earth [electronic Resource]. Chelsea House, 2008.

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