Hughes, R. L., Curphy, G. J., & Ginnett, R. C. (1996). Leadership: Enhancing the lessons of experience (2nd.ed.). IRWIN.

Hughes, Richard L., Gordon J. Curphy, and Robert C. Ginnett. Leadership: Enhancing the Lessons of Experience. 2nd.ed. Chicago: IRWIN, 1996.

Hughes, Richard L., et al. Leadership: Enhancing the Lessons of Experience. 2nd.ed. IRWIN, 1996.