Cita APA (7a ed.)

Manning, G., & Curtis, K. (1988). Leadership: Nine keys to success. Vista Systems.

Cita Chicago Style (17a ed.)

Manning, George, y Kent Curtis. Leadership: Nine Keys to Success. Cincinnati: Vista Systems, 1988.

Cita MLA (9a ed.)

Manning, George, y Kent Curtis. Leadership: Nine Keys to Success. Vista Systems, 1988.