APA citiranje

Sommerville, D. M. Y. (1958). The elements of non-Euclidean geometry. Dover.

Chicago Style (17th ed.) Citation

Sommerville, D. M. Y. The Elements of Non-Euclidean Geometry. New York: Dover, 1958.

MLA citiranje

Sommerville, D. M. Y. The Elements of Non-Euclidean Geometry. Dover, 1958.