Παραπομπή σε μορφή APA (7η εκδ.)

Bonola, R. (1955). Non-euclidean geometry: A critical and historical study of its development. Dover Publications.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Bonola, Roberto. Non-euclidean Geometry: A Critical and Historical Study of Its Development. New York: Dover Publications, 1955.

Παραπομπή σε μορφή MLA (8th εκδ.)

Bonola, Roberto. Non-euclidean Geometry: A Critical and Historical Study of Its Development. Dover Publications, 1955.