Dyfyniad APA
Winchell, A. N., & Winchell, H. (1964). Elements of Optical Mineralogy: An Introduction to Microscopic Petrography. Wiley.
Dyfyniad Arddull Chicago
Winchell, Alexander Newton, and Horace Winchell. Elements of Optical Mineralogy: An Introduction to Microscopic Petrography. New York, London, Sydney: Wiley, 1964.
Dyfyniad MLA
Winchell, Alexander Newton, and Horace Winchell. Elements of Optical Mineralogy: An Introduction to Microscopic Petrography. Wiley, 1964.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.