Bulloff, J. J., Holyoke, T. C., & Hahn, S. W. (1969). Fundations of mathematics. Springer-Verlang.
Cita Chicago (17th ed.)Bulloff, Jack J., Thomas C. Holyoke, i S. W. Hahn. Fundations of Mathematics. Nueva York: Springer-Verlang, 1969.
Cita MLA (9th ed.)Bulloff, Jack J., et al. Fundations of Mathematics. Springer-Verlang, 1969.
Atenció: Aquestes cites poden no estar 100% correctes.