APA (7th ed.) Citation

Coolidge, J. L. (1927). The elements of non-euclidean geometry (Reprint.). Oxford Univ. Press u.a.

Chicago Style (17th ed.) Citation

Coolidge, Julian Lowell. The Elements of Non-euclidean Geometry. Reprint. Oxford: Oxford Univ. Press u.a, 1927.

MLA (9th ed.) Citation

Coolidge, Julian Lowell. The Elements of Non-euclidean Geometry. Reprint. Oxford Univ. Press u.a, 1927.