Kushner, M. L. (1990). The light touch: How to use humor for business success. Simon and Schuster.
Cita Chicago (17th ed.)Kushner, Malcolm L. The Light Touch: How to Use Humor for Business Success. New York: Simon and Schuster, 1990.
Cita MLA (9th ed.)Kushner, Malcolm L. The Light Touch: How to Use Humor for Business Success. Simon and Schuster, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.