APA (7th ed.) Citation

Wilczynski, E. J. Projective differential geometry of curves and ruled surfaces. Chelsea.

Chicago Style (17th ed.) Citation

Wilczynski, Ernest Julius. Projective Differential Geometry of Curves and Ruled Surfaces. New York: Chelsea.

MLA (8th ed.) Citation

Wilczynski, Ernest Julius. Projective Differential Geometry of Curves and Ruled Surfaces. Chelsea.

Warning: These citations may not always be 100% accurate.