Dyfyniad APA

Davis, M. L. (2014). Principles of environmental engineering and science (3rd ed.). McGraw-Hill.

Dyfyniad Arddull Chicago

Davis, Mackenzie L. Principles of Environmental Engineering and Science. 3rd ed. New York: McGraw-Hill, 2014.

Dyfyniad MLA

Davis, Mackenzie L. Principles of Environmental Engineering and Science. 3rd ed. McGraw-Hill, 2014.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.