Hodnett, E. (1959). The art of working with people. Harper.
Cita Chicago (17th ed.)Hodnett, Edward. The Art of Working with People. New York: Harper, 1959.
Cita MLA (9th ed.)Hodnett, Edward. The Art of Working with People. Harper, 1959.
Atenció: Aquestes cites poden no estar 100% correctes.