Walsh, E. T. (2014). A first course in geometry (Dover edition.). Dover Publications, Inc..
Παραπομπή Chicago StyleWalsh, Edward T. A First Course in Geometry. Dover edition. Mineola, New York: Dover Publications, Inc., 2014.
Παραπομπή MLAWalsh, Edward T. A First Course in Geometry. Dover edition. Dover Publications, Inc., 2014.
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