Dyfyniad APA

Richter, D. d. (2001). Understanding soil change. Cambridge: Cambridge University Press.

Dyfyniad Arddull Chicago

Richter, Daniel deBoucherville. Understanding Soil Change. Cambridge: Cambridge University Press, 2001.

Dyfyniad MLA

Richter, Daniel deBoucherville. Understanding Soil Change. Cambridge: Cambridge University Press, 2001.

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