Halloran, J., & Frunzi, G. L. (1986). Supervision: The art of management (Second edition.). Prentice-Hall.
Cita Chicago (17th ed.)Halloran, Jack, i George L. Frunzi. Supervision: The Art of Management. Second edition. Englewood Cliffs, New Jersey: Prentice-Hall, 1986.
Cita MLA (9th ed.)Halloran, Jack, i George L. Frunzi. Supervision: The Art of Management. Second edition. Prentice-Hall, 1986.
Atenció: Aquestes cites poden no estar 100% correctes.