Gaya APA

DAVIS, M, L, ;, M, S, J. (2009). Principles of Environmental Engineering and Science . Second editiion . : McGraw-Hill Higher Education.

Gaya MLA

DAVIS, Mackenzie, L., ;, MASTEN,, Susan, J.. "Principles of Environmental Engineering and Science . Second editiion". : McGraw-Hill Higher Education, 2009. Buku.