Παραπομπή APA

Winchell, A. N. (1968). Elements of optical mineralogy: :An introduction to microscopic petrography part II-description of minerals. Wiley eastern.

Παραπομπή Chicago Style

Winchell, Alexander N. Elements of Optical Mineralogy: :An Introduction to Microscopic Petrography Part II-description of Minerals. New Delhi: Wiley eastern, 1968.

Παραπομπή MLA

Winchell, Alexander N. Elements of Optical Mineralogy: :An Introduction to Microscopic Petrography Part II-description of Minerals. Wiley eastern, 1968.