Dyfyniad APA
Cernica, . J. N. (1995). Geotechnical engineering: Soil mechanics. John Wiley & Sons.
Dyfyniad Arddull Chicago
Cernica, John N. Geotechnical Engineering: Soil Mechanics. New York: John Wiley & Sons, 1995.
Dyfyniad MLA
Cernica, John N. Geotechnical Engineering: Soil Mechanics. John Wiley & Sons, 1995.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.