Cita APA (7a ed.)

Ryan, P. J. (1989). Euclidean and non-Euclidean geometry: An analytic approach ([repr.1989].). Cambridge University Press.

Cita Chicago Style (17a ed.)

Ryan, Patrick J. Euclidean and Non-Euclidean Geometry: An Analytic Approach. [repr.1989]. Cambridge, United Kingdom: Cambridge University Press, 1989.

Cita MLA (9a ed.)

Ryan, Patrick J. Euclidean and Non-Euclidean Geometry: An Analytic Approach. [repr.1989]. Cambridge University Press, 1989.