Dyfyniad APA

DAVIS, M. L. (1991). Introduction To Environmental Engineering. McGraw-Hill.

Dyfyniad Arddull Chicago

DAVIS, Mackenzie Leo. Introduction To Environmental Engineering. McGraw-Hill, 1991.

Dyfyniad MLA

DAVIS, Mackenzie Leo. Introduction To Environmental Engineering. McGraw-Hill, 1991.

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