Dyfyniad APA
Smith , I. (2014). Smith's elements of soil mechanics (9th ed.). John Wiley & Sons.
Dyfyniad Arddull Chicago
Smith , Ian. Smith's Elements of Soil Mechanics. 9th ed. New York: John Wiley & Sons, 2014.
Dyfyniad MLA
Smith , Ian. Smith's Elements of Soil Mechanics. 9th ed. John Wiley & Sons, 2014.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.