APA Style

Cunningham, W, P., Cunningham, M, A. (2012). Environmental science: a global concern (Twelfth ed.). nyu: McGraw-Hill Companies, Inc..

MLA Style

Cunningham, William, P.., Cunningham, Mary, Ann.. "Environmental science: a global concern". Twelfth ed. nyu: McGraw-Hill Companies, Inc., 2012. Computer File.