Cita APA (7th ed.)

Hackman, M. Z., & Johnson, C. E. (2004). Leadership: A communication perspective (4th ed.). Waveland Press.

Cita Chicago (17th ed.)

Hackman, Michael Z., i Craig E. Johnson. Leadership: A Communication Perspective. 4th ed. Prospect Heights, Ill.: Waveland Press, 2004.

Cita MLA (9th ed.)

Hackman, Michael Z., i Craig E. Johnson. Leadership: A Communication Perspective. 4th ed. Waveland Press, 2004.