Dyfyniad APA

Wegener, A. (1966). origin of continents and oceans (4th German ed./by <John Biram>.). Methuen.

Dyfyniad Arddull Chicago

Wegener, Alfred. Origin of Continents and Oceans. 4th German ed./by <John Biram>. London: Methuen, 1966.

Dyfyniad MLA

Wegener, Alfred. Origin of Continents and Oceans. 4th German ed./by <John Biram>. Methuen, 1966.

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