Cita APA (7a ed.)

Hilbert, D., & Cohn Vossen, S. (1956). Geometry and the imagination. Chelsea.

Cita Chicago Style (17a ed.)

Hilbert, David, y Stefan Cohn Vossen. Geometry and the Imagination. New York: Chelsea, 1956.

Cita MLA (9a ed.)

Hilbert, David, y Stefan Cohn Vossen. Geometry and the Imagination. Chelsea, 1956.