Wilder, R. L. (1965). Introduction to the foundations of mathematics (2nd. ed.). John Wiley & Sons.
Cita Chicago (17th ed.)Wilder, Raymond L. Introduction to the Foundations of Mathematics. 2nd. ed. New York: John Wiley & Sons, 1965.
Cita MLA (9th ed.)Wilder, Raymond L. Introduction to the Foundations of Mathematics. 2nd. ed. John Wiley & Sons, 1965.
Atenció: Aquestes cites poden no estar 100% correctes.