Dyfyniad APA

Allison, R. J. (2002). Applied geomorphology theory and practice. John Wiley & Sons.

Dyfyniad Arddull Chicago

Allison, R. J. Applied Geomorphology Theory and Practice. West Sussex, England: John Wiley & Sons, 2002.

Dyfyniad MLA

Allison, R. J. Applied Geomorphology Theory and Practice. John Wiley & Sons, 2002.

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