Geometry Symposium Siegen, Germany, SpringerLink (Online service), Tölke, J., & Wills, J. M. (1979). Contributions to geometry: Proceedings of the Geometry-Symposium held in Siegen, June 28, 1978 to July 1, 1978. Birkhaüser Verlag.
Chicago Style (17th ed.) CitationGeometry Symposium Siegen, Germany, SpringerLink (Online service), Jürgen Tölke, and Jörg M. Wills. Contributions to Geometry: Proceedings of the Geometry-Symposium Held in Siegen, June 28, 1978 to July 1, 1978. Basel ; Boston: Birkhaüser Verlag, 1979.
MLA (9th ed.) CitationGeometry Symposium Siegen, Germany, et al. Contributions to Geometry: Proceedings of the Geometry-Symposium Held in Siegen, June 28, 1978 to July 1, 1978. Birkhaüser Verlag, 1979.
Warning: These citations may not always be 100% accurate.