APA Style

Cunningham, W, P., Cunningham, M, A. (2009). Principles of Environmental Science Inquiry and Applications Fifth Edition (Pertama). New York: McGRAW-HILL BOOK COMPANY, Inc.

MLA Style

Cunningham, William, P.., Cunningham, Mary, Ann. "Principles of Environmental Science Inquiry and Applications Fifth Edition". Pertama New York: McGRAW-HILL BOOK COMPANY, Inc, 2009. Text.