Hall, D. W., & Szabo, S. (1971). Plane geometry, an approach through isometries. Prentice-Hall.
Παραπομπή Chicago StyleHall, Dick Wick, και Steven Szabo. Plane Geometry, an Approach Through Isometries. Englewood Cliffs, N.J.: Prentice-Hall, 1971.
Παραπομπή MLAHall, Dick Wick, και Steven Szabo. Plane Geometry, an Approach Through Isometries. Prentice-Hall, 1971.
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