Dyfyniad APA
Hartman, H. L. (2002). Introductory Mining Engineering (2nd ed.). John Wiley & Sons.
Dyfyniad Arddull Chicago
Hartman, Howard L. Introductory Mining Engineering. 2nd ed. New e Jersey: John Wiley & Sons, 2002.
Dyfyniad MLA
Hartman, Howard L. Introductory Mining Engineering. 2nd ed. John Wiley & Sons, 2002.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.