APA (7th ed.) Citation

Courtenay, W. R., & Williams, J. D. (2004). Snakeheads (Pisces, Channidae): A biological synopsis and risk assessment. U.S. Department of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Courtenay, Walter R., and James D. Williams. Snakeheads (Pisces, Channidae): A Biological Synopsis and Risk Assessment. [Reston, Virginia]: U.S. Department of the Interior, U.S. Geological Survey, 2004.

MLA (9th ed.) Citation

Courtenay, Walter R., and James D. Williams. Snakeheads (Pisces, Channidae): A Biological Synopsis and Risk Assessment. U.S. Department of the Interior, U.S. Geological Survey, 2004.