Dyfyniad APA

Hill, M. K. (2005). Understanding environmental pollution. Cambridge University Press.

Dyfyniad Arddull Chicago

Hill, Marquita K. Understanding Environmental Pollution. New Delhi: Cambridge University Press, 2005.

Dyfyniad MLA

Hill, Marquita K. Understanding Environmental Pollution. Cambridge University Press, 2005.

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