Dyfyniad APA

Powri, W. Soil mechanics: Concepts and applications (3a ed.).

Dyfyniad Arddull Chicago

Powri, William. Soil Mechanics: Concepts and Applications. 3a ed.

Dyfyniad MLA

Powri, William. Soil Mechanics: Concepts and Applications. 3a ed.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.