Klein, F. (1939). Elementary mathematics from an advanced standpoint. Dover.
Cita Chicago (17th ed.)Klein, Felix. Elementary Mathematics from an Advanced Standpoint. Nueva York: Dover, 1939.
Cita MLA (9th ed.)Klein, Felix. Elementary Mathematics from an Advanced Standpoint. Dover, 1939.
Atenció: Aquestes cites poden no estar 100% correctes.