Rich, B. (1963). Schaum's outline of principles and problems of plane geometry. McGraw Hill.
शिकागो स्टाइल उद्धरणRich, Barnett. Schaum's Outline of Principles and Problems of Plane Geometry. New York: McGraw Hill, 1963.
एमएलए उद्धरणRich, Barnett. Schaum's Outline of Principles and Problems of Plane Geometry. McGraw Hill, 1963.
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