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

Hughes, Richard L., Robert C. Ginnett, and Gordon J. Curphy. 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.