Pfiffner, J. M., & Fels, M. (1964). Supervision of personnel. Prentice hall.
Chicago Edition CitationPfiffner, John M., i Marshall Fels. Supervision of Personnel. New Jersey: Prentice hall, 1964.
Cita MLAPfiffner, John M., i Marshall Fels. Supervision of Personnel. Prentice hall, 1964.
Atenció: Aquestes cites poden no estar 100% correctes.