MLA

Bonola, Roberto, et al. Non-euclidean Geometry : a Critical and Historical Study of Its Developments. New York (N.Y.): Dover, 1955.

APA

Bonola, R., Carslaw, H. Scott, Enriques, F., Bólyai, J., & Lobačevskij, N. Ivanovič. (1955). Non-euclidean geometry : a critical and historical study of its developments. New York (N.Y.): Dover.

Chicago

Bonola, Roberto, Federigo Enriques, János Bólyai, and Nikolaj Ivanovič Lobačevskij. Non-Euclidean Geometry: A Critical and Historical Study of Its Developments. Translated by Horatio Scott Carslaw. New York (N.Y.): Dover, 1955.