Sibley, T. Q. (2009). The foundations of Mathematics. John Wiley and Sons, Inc.
Cita Chicago (17th ed.)Sibley, Thomas Q. The Foundations of Mathematics. Hoboken: John Wiley and Sons, Inc, 2009.
Cita MLA (9th ed.)Sibley, Thomas Q. The Foundations of Mathematics. John Wiley and Sons, Inc, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.