Dyfyniad APA
Smith, G., & Smith, I. G. (1998). Elements of soil mechanics (7th ed.). Blackwell Science.
Dyfyniad Arddull Chicago
Smith, G.N, and Iam G.N Smith. Elements of Soil Mechanics. 7th ed. London: Blackwell Science, 1998.
Dyfyniad MLA
Smith, G.N, and Iam G.N Smith. Elements of Soil Mechanics. 7th ed. Blackwell Science, 1998.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.