Παραπομπή APA

Beardon, A. F. (1983). The geometry of discrete groups. Springer-Verlag.

Παραπομπή Chicago Style

Beardon, Alan F. The Geometry of Discrete Groups. New York: Springer-Verlag, 1983.

Παραπομπή MLA

Beardon, Alan F. The Geometry of Discrete Groups. Springer-Verlag, 1983.