Cita APA (7th ed.)

Ryan, P. J. (1986). Euclidean and non-euclidean geometry: An analytic approach. Univ. pr.

Cita Chicago (17th ed.)

Ryan, Patrick J. Euclidean and Non-euclidean Geometry: An Analytic Approach. Cambridge: Univ. pr, 1986.

Cita MLA (9th ed.)

Ryan, Patrick J. Euclidean and Non-euclidean Geometry: An Analytic Approach. Univ. pr, 1986.