Dyfyniad APA

Nriagu, J. O. (1984). Environmental impacts of smelters. John wiley.

Dyfyniad Arddull Chicago

Nriagu, Jerome O. Environmental Impacts of Smelters. New york: John wiley, 1984.

Dyfyniad MLA

Nriagu, Jerome O. Environmental Impacts of Smelters. John wiley, 1984.

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