Conference on Discontinuous Groups and Riemann Surfaces University of Maryland & Greenberg, L. (1974). Discontinuous groups and Riemann surfaces: Proceedings of the 1973 Conference at the University of Maryland. Princeton University Press.
Παραπομπή σε μορφή Chicago (17η εκδ.)Conference on Discontinuous Groups and Riemann Surfaces University of Maryland και Leon Greenberg. Discontinuous Groups and Riemann Surfaces: Proceedings of the 1973 Conference at the University of Maryland. Princeton, N.J.: Princeton University Press, 1974.
Παραπομπή σε μορφή MLA (9th εκδ.)Conference on Discontinuous Groups and Riemann Surfaces University of Maryland και Leon Greenberg. Discontinuous Groups and Riemann Surfaces: Proceedings of the 1973 Conference at the University of Maryland. Princeton University Press, 1974.