Dyfyniad APA

Thomas,Deborah s.k. (2013). Social Vulnerability to disasters (2ed.). CRC press.

Dyfyniad Arddull Chicago

Thomas,Deborah s.k. Social Vulnerability to Disasters. 2ed. Boca Raton: CRC press, 2013.

Dyfyniad MLA

Thomas,Deborah s.k. Social Vulnerability to Disasters. 2ed. CRC press, 2013.

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