Dyfyniad APA

Duncan, J. M. (2005). Soil strength and slope stability. New Jersey: John Wiley and Sons.

Dyfyniad Arddull Chicago

Duncan, J. Michael. Soil Strength and Slope Stability. New Jersey: John Wiley and Sons, 2005.

Dyfyniad MLA

Duncan, J. Michael. Soil Strength and Slope Stability. New Jersey: John Wiley and Sons, 2005.

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