Dyfyniad APA

Harrison, R. M. (1996). Pollution: Causes, effects and control (3rd ed.). The Royal Society of Chemistry.

Dyfyniad Arddull Chicago

Harrison, Roy M. Pollution: Causes, Effects and Control. 3rd ed. Cambridge: The Royal Society of Chemistry, 1996.

Dyfyniad MLA

Harrison, Roy M. Pollution: Causes, Effects and Control. 3rd ed. The Royal Society of Chemistry, 1996.

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