Dyfyniad APA

Douglas, I., & Spencer, T. (1982). Applied geomorphology in the tropics. Borntraeger.

Dyfyniad Arddull Chicago

Douglas, Ian, and T. Spencer. Applied Geomorphology in the Tropics. Berlin: Borntraeger, 1982.

Dyfyniad MLA

Douglas, Ian, and T. Spencer. Applied Geomorphology in the Tropics. Borntraeger, 1982.

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