Winchell, A. N., & Winchell, N. H. (1931). Elements of optical mineralogy: An introduction to microscopic petrography (4. ed., rev. and enl.). John Wiley & sons, inc.; Chapman & Hall, limited.
Chicago Style (17th ed.) CitationWinchell, Alexander Newton, and N. H. Winchell. Elements of Optical Mineralogy: An Introduction to Microscopic Petrography. 4. ed., rev. and enl. New York : London: John Wiley & sons, inc.; Chapman & Hall, limited, 1931.
MLA (9th ed.) CitationWinchell, Alexander Newton, and N. H. Winchell. Elements of Optical Mineralogy: An Introduction to Microscopic Petrography. 4. ed., rev. and enl. John Wiley & sons, inc.; Chapman & Hall, limited, 1931.
Warning: These citations may not always be 100% accurate.