Dyfyniad APA
Goodman,Richard E. (2010). Introduction to rock mechanics (2nd ed.). Wiley India.
Dyfyniad Arddull Chicago
Goodman,Richard E. Introduction to Rock Mechanics. 2nd ed. New Delhi: Wiley India, 2010.
Dyfyniad MLA
Goodman,Richard E. Introduction to Rock Mechanics. 2nd ed. Wiley India, 2010.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.