Cita APA (7th ed.)
Forder, H. G. (1958). The foundations of euclidean geometry (1a. ed.). Dover publications.
Cita Chicago (17th ed.)
Forder, Henry George. The Foundations of Euclidean Geometry. 1a. ed. New York: Dover publications, 1958.
Cita MLA (9th ed.)
Forder, Henry George. The Foundations of Euclidean Geometry. 1a. ed. Dover publications, 1958.
Atenció: Aquestes cites poden no estar 100% correctes.