Dyfyniad APA

Strange, C. (2009). Water pollution and health. Alpha House.

Dyfyniad Arddull Chicago

Strange, Cordelia. Water Pollution and Health. New York: Alpha House, 2009.

Dyfyniad MLA

Strange, Cordelia. Water Pollution and Health. Alpha House, 2009.

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