Gaya APA

OVERCASH, M, R., Davidison, J, M. (1980). ENVIRONMENTAL IMPACT OF NONPOINT SOURCE POLLUTION . Michigan: Ann Arbor Science Publisher, inc..

Gaya MLA

OVERCASH, Michael, R.., Davidison, James, M.. "ENVIRONMENTAL IMPACT OF NONPOINT SOURCE POLLUTION". Michigan: Ann Arbor Science Publisher, inc., 1980. Textbook.