Dyfyniad APA

McCullagh, P. (1979). Modern Concepts in Geomorphology. OUP.

Dyfyniad Arddull Chicago

McCullagh, Patrick. Modern Concepts in Geomorphology. Oxford: OUP, 1979.

Dyfyniad MLA

McCullagh, Patrick. Modern Concepts in Geomorphology. OUP, 1979.

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