Winchell, N. H., & Winchell, A. N. (1909). Elements of optical mineralogy: An introduction to microscopic petrography, with description of all minerals whose optical elements are known and tables arranged for their determination microscopically. D. Van Nostrand.
Chicago Style (17th ed.) CitationWinchell, N. H., and Alexander Newton Winchell. Elements of Optical Mineralogy: An Introduction to Microscopic Petrography, with Description of All Minerals Whose Optical Elements Are Known and Tables Arranged for Their Determination Microscopically. New York: D. Van Nostrand, 1909.
MLA (9th ed.) CitationWinchell, N. H., and Alexander Newton Winchell. Elements of Optical Mineralogy: An Introduction to Microscopic Petrography, with Description of All Minerals Whose Optical Elements Are Known and Tables Arranged for Their Determination Microscopically. D. Van Nostrand, 1909.