Cita APA (7a ed.)

Stillwell, J. (1992). Geometry of surfaces. Springer-Verlag.

Cita Chicago Style (17a ed.)

Stillwell, John. Geometry of Surfaces. New York [etc.]: Springer-Verlag, 1992.

Cita MLA (9a ed.)

Stillwell, John. Geometry of Surfaces. Springer-Verlag, 1992.