Gaya APA

Winchell, A, N. (1937). Elements Of Optical Mineralogy: An Introduction To Microscopic Petrography Part I. Principle and Methods (5th Ed.). New Delhi, India: Wiley Eastern Private Limited.

Gaya MLA

Winchell, Alexander, N.. "Elements Of Optical Mineralogy: An Introduction To Microscopic Petrography Part I. Principle and Methods". 5th Ed. New Delhi, India: Wiley Eastern Private Limited, 1937. Text.