APA (7th ed.) Citation

Coolidge, J. L. The Elements of non-Euclidean Geometry.

Chicago Style (17th ed.) Citation

Coolidge, Julian Lowell. The Elements of Non-Euclidean Geometry.

MLA (9th ed.) Citation

Coolidge, Julian Lowell. The Elements of Non-Euclidean Geometry.

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