Dyfyniad APA

(2007). Evaluation and prevention of natural risks. Leiden,Philadelphia: Taylor & Francis.

Dyfyniad Arddull Chicago

Evaluation and Prevention of Natural Risks. Leiden,Philadelphia: Taylor & Francis, 2007.

Dyfyniad MLA

Evaluation and Prevention of Natural Risks. Leiden,Philadelphia: Taylor & Francis, 2007.

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