Cita APA (7th ed.)

Tölke, J., & Wills, J. M. (1979). Contributions to geometry. Brikhäuser Verlag.

Cita Chicago (17th ed.)

Tölke, Jürgen, i Jörg M. Wills. Contributions to Geometry. Basilea: Brikhäuser Verlag, 1979.

Cita MLA (9th ed.)

Tölke, Jürgen, i Jörg M. Wills. Contributions to Geometry. Brikhäuser Verlag, 1979.