Dyfyniad APA

Winchell, A. N. (1965). Elements of optical mineralogy part 1/ 5th ed (5th ed.). John willey &sons.

Dyfyniad Arddull Chicago

Winchell, Alexander N. Elements of Optical Mineralogy Part 1/ 5th Ed. 5th ed. New york: John willey &sons, 1965.

Dyfyniad MLA

Winchell, Alexander N. Elements of Optical Mineralogy Part 1/ 5th Ed. 5th ed. John willey &sons, 1965.

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