APA-referens (7:e uppl.)

Yaglom, I. M. (1979). A simple non-euclidean geometry and its physical basis. Springer-Verlag.

Chicago-referens (17:e uppl.)

Yaglom, I. M. A Simple Non-euclidean Geometry and Its Physical Basis. New York: Springer-Verlag, 1979.

MLA-referens (9:e uppl.)

Yaglom, I. M. A Simple Non-euclidean Geometry and Its Physical Basis. Springer-Verlag, 1979.