Gaya APA

J.Ryan, P. (1986). Euclidean And Non-Euclidean Geometry: An Analytic Approach (Cet.1). New York: Cambridge university press.

Gaya MLA

J.Ryan, Patrick. "Euclidean And Non-Euclidean Geometry: An Analytic Approach". Cet.1 New York: Cambridge university press, 1986. Text.