Dyfyniad APA

(1972). Water and sewage works. Scranton Publishing Company.

Dyfyniad Arddull Chicago

Water and Sewage Works. Illinois: Scranton Publishing Company, 1972.

Dyfyniad MLA

Water and Sewage Works. Scranton Publishing Company, 1972.

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