Rich, B. (1963). Principles & problems of plane geometry. Schaum Pub. Co.
芝加哥风格引文Rich, Barnett. Principles & Problems of Plane Geometry. New York: Schaum Pub. Co, 1963.
MLA引文Rich, Barnett. Principles & Problems of Plane Geometry. Schaum Pub. Co, 1963.
警告：这些引文格式不一定是100％准确.