Dyfyniad APA
Davis, M. L., & Cornwell, D. A. (1998). Introduction to environmental engineering (3rd ed.). WCB McGraw-Hill.
Dyfyniad Arddull Chicago
Davis, Mackenzie Leo, and David A. Cornwell. Introduction to Environmental Engineering. 3rd ed. Boston, Mass.: WCB McGraw-Hill, 1998.
Dyfyniad MLA
Davis, Mackenzie Leo, and David A. Cornwell. Introduction to Environmental Engineering. 3rd ed. WCB McGraw-Hill, 1998.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.