Cita APA (7a ed.)

Winchell, A. N., & Winchell, H. (1961). Elements of optical mineralogy: An introduction to microscopic petrography (4th ed.). John Wiley & Sons.

Cita Chicago Style (17a ed.)

Winchell, Alexander Newton, y Horace Winchell. Elements of Optical Mineralogy: An Introduction to Microscopic Petrography. 4th ed. London ; Sydney: John Wiley & Sons, 1961.

Cita MLA (9a ed.)

Winchell, Alexander Newton, y Horace Winchell. Elements of Optical Mineralogy: An Introduction to Microscopic Petrography. 4th ed. John Wiley & Sons, 1961.