Perry, E. (1992). Geometry: Axiomatic developments with problem solving. M. Dekker.
Παραπομπή Chicago StylePerry, Earl. Geometry: Axiomatic Developments with Problem Solving. New York: M. Dekker, 1992.
Παραπομπή MLAPerry, Earl. Geometry: Axiomatic Developments with Problem Solving. M. Dekker, 1992.
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