Dyfyniad APA

Karol, R. H. (1955). Engineering properties of soils. Prentice-Hall.

Dyfyniad Arddull Chicago

Karol, Reuben Hirsh. Engineering Properties of Soils. New york: Prentice-Hall, 1955.

Dyfyniad MLA

Karol, Reuben Hirsh. Engineering Properties of Soils. Prentice-Hall, 1955.

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