Dyfyniad APA

Frater, H. (1998). Natural disasters: Cause, course, effect, simulation. Springer electronic media.

Dyfyniad Arddull Chicago

Frater, Harald. Natural Disasters: Cause, Course, Effect, Simulation. Berlin: Springer electronic media, 1998.

Dyfyniad MLA

Frater, Harald. Natural Disasters: Cause, Course, Effect, Simulation. Springer electronic media, 1998.

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