APA (7th ed.) Citation

Nichols, C. R., & Williams, R. G. (2009). Encyclopedia of marine science [electronic resource]. Facts on File.

Chicago Style (17th ed.) Citation

Nichols, C. Reid, and Robert G. Williams. Encyclopedia of Marine Science [electronic Resource]. New York: Facts on File, 2009.

MLA (9th ed.) Citation

Nichols, C. Reid, and Robert G. Williams. Encyclopedia of Marine Science [electronic Resource]. Facts on File, 2009.