Dyfyniad APA

Smith, K. (2001). Enviornmental hazards: Assessing risk and reducing disaster. Routledge.

Dyfyniad Arddull Chicago

Smith, Keith. Enviornmental Hazards: Assessing Risk and Reducing Disaster. London: Routledge, 2001.

Dyfyniad MLA

Smith, Keith. Enviornmental Hazards: Assessing Risk and Reducing Disaster. Routledge, 2001.

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