Layman, C. S., Brown, V., & Shannon, T. J. (2002). The power of logic (Second Edition.). Mayfield Pub.
Cita Chicago (17th ed.)Layman, C. Stephen, Victoria Brown, i Timothy J. Shannon. The Power of Logic. Second Edition. Mountain View, California: Mayfield Pub, 2002.
Cita MLA (9th ed.)Layman, C. Stephen, et al. The Power of Logic. Second Edition. Mayfield Pub, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.