Παραπομπή APA

Rich, B. (1963). Schaum's outline of principles and problems of plane geometry. McGraw Hill.

Παραπομπή Chicago Style

Rich, Barnett. Schaum's Outline of Principles and Problems of Plane Geometry. New York: McGraw Hill, 1963.

Παραπομπή MLA

Rich, Barnett. Schaum's Outline of Principles and Problems of Plane Geometry. McGraw Hill, 1963.