Cita APA (7th ed.)

Rich, B. (1963). Principles & problems of plane geometry. Schaum Pub. Co.

Cita Chicago (17th ed.)

Rich, Barnett. Principles & Problems of Plane Geometry. New York: Schaum Pub. Co, 1963.

Cita MLA (9th ed.)

Rich, Barnett. Principles & Problems of Plane Geometry. Schaum Pub. Co, 1963.