Dyfyniad APA

Morris, R. D. (2007). The blue death: Disease, disaster, and the water we drink (First edition.). HaperCillins.

Dyfyniad Arddull Chicago

Morris, Robert D. The Blue Death: Disease, Disaster, and the Water We Drink. First edition. New York: HaperCillins, 2007.

Dyfyniad MLA

Morris, Robert D. The Blue Death: Disease, Disaster, and the Water We Drink. First edition. HaperCillins, 2007.

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