Zieschang, H., Vogt, E., & Coldewey, H. (1980). Surfaces and planar discontinuous groups Heiner Zieschang, Elmar Vogt, Hans-Dieter Coldewey ; translated from the German by J. Stillwell (Rev. and expanded translation.). Springer. https://doi.org/10.1007/BFb0089692
Chicago Style (17th ed.) CitationZieschang, Heiner, Elmar Vogt, and Hans-Dieter Coldewey. Surfaces and Planar Discontinuous Groups Heiner Zieschang, Elmar Vogt, Hans-Dieter Coldewey ; Translated from the German by J. Stillwell. Rev. and expanded translation. Berlin ; New York: Springer, 1980. https://doi.org/10.1007/BFb0089692.
MLA (9th ed.) CitationZieschang, Heiner, et al. Surfaces and Planar Discontinuous Groups Heiner Zieschang, Elmar Vogt, Hans-Dieter Coldewey ; Translated from the German by J. Stillwell. Rev. and expanded translation. Springer, 1980. https://doi.org/10.1007/BFb0089692.