APA (7th ed.) Citation

Gans, D. (1973). An introduction to non-Euclidian geometry. Acad. Pr.

Chicago Style (17th ed.) Citation

Gans, David. An Introduction to Non-Euclidian Geometry. San diego [u. a.]: Acad. Pr, 1973.

MLA (9th ed.) Citation

Gans, David. An Introduction to Non-Euclidian Geometry. Acad. Pr, 1973.