Helbert, D. ;. The Foundations of Geometry. The Open Court Publishing Company, La Salle, 1959.
Chicago Style CitationHelbert, David. The Foundations of Geometry. The Open Court Publishing Company, La Salle, 1959.
MLA CitationHelbert, David. The Foundations of Geometry. The Open Court Publishing Company, La Salle, 1959.
Warning: These citations may not always be 100% accurate.