APA (7th ed.) Citation

Sommerville, D. M. Y. (1958). An introduction th the geometry of n dimensions. Dover Publications.

Chicago Style (17th ed.) Citation

Sommerville, Duncan M'Laren Young. An Introduction Th the Geometry of N Dimensions. New York: Dover Publications, 1958.

MLA (9th ed.) Citation

Sommerville, Duncan M'Laren Young. An Introduction Th the Geometry of N Dimensions. Dover Publications, 1958.