Cita APA (7th ed.)

Guggenheimer, H. W. (1967). Plane Geometry and Its Groups. Holden-Day.

Cita Chicago (17th ed.)

Guggenheimer, Heinrich W. Plane Geometry and Its Groups. San Francisco: Holden-Day, 1967.

Cita MLA (9th ed.)

Guggenheimer, Heinrich W. Plane Geometry and Its Groups. Holden-Day, 1967.