Cita APA (7th ed.)
Allen, L. A. (1969). The Principles of professional management. Louis A. Allen associates.
Cita Chicago (17th ed.)
Allen, Louis A. The Principles of Professional Management. Calif.: Louis A. Allen associates, 1969.
Cita MLA (9th ed.)
Allen, Louis A. The Principles of Professional Management. Louis A. Allen associates, 1969.
Atenció: Aquestes cites poden no estar 100% correctes.