Dyfyniad APA

Walker, R. (1978). Water supply, treatment, and distribution. Prentice-Hall.

Dyfyniad Arddull Chicago

Walker, Rodger. Water Supply, Treatment, and Distribution. Englewood cliffs, N. J: Prentice-Hall, 1978.

Dyfyniad MLA

Walker, Rodger. Water Supply, Treatment, and Distribution. Prentice-Hall, 1978.

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