APA-viite (7. p.)
Perry, E. Geometry: Axiomatic Developments with Problem Solving. Marcel Dekker.
Chicago-viite (17. p.)
Perry, Earl. Geometry: Axiomatic Developments with Problem Solving. Nueva York, EUA: Marcel Dekker.
MLA-viite (9. p.)
Perry, Earl. Geometry: Axiomatic Developments with Problem Solving. Marcel Dekker.
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