RICH, B. (1963). Schaum's outline of principles and: Problems of plane geometry. McGraw-Hill.
Cita Chicago (17th ed.)RICH, Barnett. Schaum's Outline of Principles and: Problems of Plane Geometry. New York: McGraw-Hill, 1963.
Cita MLA (9th ed.)RICH, Barnett. Schaum's Outline of Principles and: Problems of Plane Geometry. McGraw-Hill, 1963.
Atenció: Aquestes cites poden no estar 100% correctes.