Dyfyniad APA
Hausmann, M. R. (1990). Engineering principles of ground modification. McGraw-Hill.
Dyfyniad Arddull Chicago
Hausmann, Manfred R. Engineering Principles of Ground Modification. New York: McGraw-Hill, 1990.
Dyfyniad MLA
Hausmann, Manfred R. Engineering Principles of Ground Modification. McGraw-Hill, 1990.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.