Dyfyniad APA

Hill, M. K. (2010). Understanding environmental pollution (3rd ed.). Cambridge University press.

Dyfyniad Arddull Chicago

Hill, Marquita K. Understanding Environmental Pollution. 3rd ed. New York: Cambridge University press, 2010.

Dyfyniad MLA

Hill, Marquita K. Understanding Environmental Pollution. 3rd ed. Cambridge University press, 2010.

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