Cita APA (7th ed.)

Kelly, P. J., & Matthews, G. (1981). The non-euclidean, hyperbolic plane: Its structure and consistency. Springer-Verlag.

Cita Chicago (17th ed.)

Kelly, Paul J., i Gordon Matthews. The Non-euclidean, Hyperbolic Plane: Its Structure and Consistency. Nueva York: Springer-Verlag, 1981.

Cita MLA (9th ed.)

Kelly, Paul J., i Gordon Matthews. The Non-euclidean, Hyperbolic Plane: Its Structure and Consistency. Springer-Verlag, 1981.