Cita APA (7th ed.)

Ewald, G. (1971). Geometry: An introduction. Wadsworth.

Cita Chicago (17th ed.)

Ewald, Günter. Geometry: An Introduction. Belmont: Wadsworth, 1971.

Cita MLA (9th ed.)

Ewald, Günter. Geometry: An Introduction. Wadsworth, 1971.