Dyfyniad APA

Easton, T. A. (2011). Taking sides: Clashing views on environmental issues (14th ed.). New York: McGraw-Hill.

Dyfyniad Arddull Chicago

Easton, Thomas A. Taking Sides: Clashing Views On Environmental Issues. 14th ed. New York: McGraw-Hill, 2011.

Dyfyniad MLA

Easton, Thomas A. Taking Sides: Clashing Views On Environmental Issues. 14th ed. New York: McGraw-Hill, 2011.

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