Wilczynski, E. J. Projective differential geometry of curves and ruled surfaces. Chelsea.
Chicago Style (17th ed.) CitationWilczynski, Ernest Julius. Projective Differential Geometry of Curves and Ruled Surfaces. New York: Chelsea.
MLA (8th ed.) CitationWilczynski, Ernest Julius. Projective Differential Geometry of Curves and Ruled Surfaces. Chelsea.
Warning: These citations may not always be 100% accurate.