Dyfyniad APA

Smith, K. (1992). Environmental hazards : assessing risk and: Reducing disaster. Routledge.

Dyfyniad Arddull Chicago

Smith, Keith. Environmental Hazards : Assessing Risk and: Reducing Disaster. London: Routledge, 1992.

Dyfyniad MLA

Smith, Keith. Environmental Hazards : Assessing Risk and: Reducing Disaster. Routledge, 1992.

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