Dyfyniad APA

Holtz, R. (1988). Geosynthetics for Soil Improvment. American society of Civil Engineers.

Dyfyniad Arddull Chicago

Holtz, R.D. Geosynthetics for Soil Improvment. New York: American society of Civil Engineers, 1988.

Dyfyniad MLA

Holtz, R.D. Geosynthetics for Soil Improvment. American society of Civil Engineers, 1988.

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