Bittel, L. R. (1980). What every supervisor should know: The basics of supervisory management (4th.). McGraw-Hill.
Cita Chicago (17th ed.)Bittel, Lester R. What Every Supervisor Should Know: The Basics of Supervisory Management. 4th. New York: McGraw-Hill, 1980.
Cita MLA (9th ed.)Bittel, Lester R. What Every Supervisor Should Know: The Basics of Supervisory Management. 4th. McGraw-Hill, 1980.
Atenció: Aquestes cites poden no estar 100% correctes.