Dyfyniad APA
Irwin, T., Wechter, E., & MacMillan, M. (2014). Impact: Great leadership changes everything. BenBella Books.
Dyfyniad Arddull Chicago
Irwin, Tim, Eric Wechter, and Matthew MacMillan. Impact: Great Leadership Changes Everything. Dallas, Texas: BenBella Books, 2014.
Dyfyniad MLA
Irwin, Tim, et al. Impact: Great Leadership Changes Everything. BenBella Books, 2014.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.