Dyfyniad APA

Kerr, P. F. (1977). Optical mineralogy: :4th ed (4th ed.). McGraw-Hill.

Dyfyniad Arddull Chicago

Kerr, Paul F. Optical Mineralogy: :4th Ed. 4th ed. New York: McGraw-Hill, 1977.

Dyfyniad MLA

Kerr, Paul F. Optical Mineralogy: :4th Ed. 4th ed. McGraw-Hill, 1977.

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