Feldman, R. (1993). Reason and argument. Prentice Hall.
Cita Chicago (17th ed.)Feldman, Richard. Reason and Argument. Englewood Cliffs, New Jersey: Prentice Hall, 1993.
Cita MLA (9th ed.)Feldman, Richard. Reason and Argument. Prentice Hall, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.