Dyfyniad APA
Das,Braja M, & G.V.Ramana. (2011). Principles of Soil Dynamics (2nd ed.). Cengage Learning.
Dyfyniad Arddull Chicago
Das,Braja M, and G.V.Ramana. Principles of Soil Dynamics. 2nd ed. India: Cengage Learning, 2011.
Dyfyniad MLA
Das,Braja M, and G.V.Ramana. Principles of Soil Dynamics. 2nd ed. Cengage Learning, 2011.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.