Dyfyniad APA

Abbott, P. L. (2002). Natural disasters (Third edition.). McGraw-Hill.

Dyfyniad Arddull Chicago

Abbott, Patrick L. Natural Disasters. Third edition. Boston: McGraw-Hill, 2002.

Dyfyniad MLA

Abbott, Patrick L. Natural Disasters. Third edition. McGraw-Hill, 2002.

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