Dyfyniad APA
Das,Braja M. (2013). Fundamentals of Geotechnical Engineering (4th ed.). Cengage Learning.
Dyfyniad Arddull Chicago
Das,Braja M. Fundamentals of Geotechnical Engineering. 4th ed. New Delhi: Cengage Learning, 2013.
Dyfyniad MLA
Das,Braja M. Fundamentals of Geotechnical Engineering. 4th ed. Cengage Learning, 2013.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.