Dyfyniad APA

CHENG LIU & EVETT, J. B. (1981). Soils and foundations. Prentice-Hall.

Dyfyniad Arddull Chicago

CHENG LIU and Jack B. EVETT. Soils and Foundations. New Jersey: Prentice-Hall, 1981.

Dyfyniad MLA

CHENG LIU and Jack B. EVETT. Soils and Foundations. Prentice-Hall, 1981.

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