Dyfyniad APA
Knappett, J., & Craig, R. (2012). Craig's soil mechanics (8th ed.). Spon Press.
Dyfyniad Arddull Chicago
Knappett, Jonathan, and R.F Craig. Craig's Soil Mechanics. 8th ed. New York: Spon Press, 2012.
Dyfyniad MLA
Knappett, Jonathan, and R.F Craig. Craig's Soil Mechanics. 8th ed. Spon Press, 2012.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.