Dyfyniad APA

McCormick, J. (2009). Acid earth: The global threat of acid pollution. Earthscan Publications.

Dyfyniad Arddull Chicago

McCormick, John. Acid Earth: The Global Threat of Acid Pollution. Oxfordshire, OX: Earthscan Publications, 2009.

Dyfyniad MLA

McCormick, John. Acid Earth: The Global Threat of Acid Pollution. Earthscan Publications, 2009.

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