APA Style

Cunningham, W, P., Cunningham, M, A. (2013). Principles of environmental science: inquiry & applications (7th ed.). nyu: McGraw-Hill.

MLA Style

Cunningham, William, P.., Cunningham, Mary, Ann.. "Principles of environmental science: inquiry & applications". 7th ed. nyu: McGraw-Hill, 2013. Computer File.