Dyfyniad APA

Twort. Alan Charles. (1963). A textbook of water supply. American Elsevier Pub.

Dyfyniad Arddull Chicago

Twort. Alan Charles. A Textbook of Water Supply. New York: American Elsevier Pub, 1963.

Dyfyniad MLA

Twort. Alan Charles. A Textbook of Water Supply. American Elsevier Pub, 1963.

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