Cita APA (7th ed.)

Irwin, T., Wechter, E., & MacMillan, M. (2014). Impact: Great leadership changes everything. BenBella Books.

Cita Chicago (17th ed.)

Irwin, Tim, Eric Wechter, i Matthew MacMillan. Impact: Great Leadership Changes Everything. Dallas, Texas: BenBella Books, 2014.

Cita MLA (9th ed.)

Irwin, Tim, et al. Impact: Great Leadership Changes Everything. BenBella Books, 2014.