APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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