APA (7th ed.) Citation

Brown, S. E., & Welton, W. C. (2008). Heavy metal pollution. Nova Science Publishers.

Chicago Style (17th ed.) Citation

Brown, Samuel E., and William C. Welton. Heavy Metal Pollution. New York: Nova Science Publishers, 2008.

MLA (9th ed.) Citation

Brown, Samuel E., and William C. Welton. Heavy Metal Pollution. Nova Science Publishers, 2008.