Fullan, M., McKenzie, W. B., Getty, & Hamilton, J. (2014). The principal: Three keys to maximizing impact (First edition.). Jossey-Bass.

Fullan, Michael, Walter B. McKenzie, Getty, and John Hamilton. The Principal: Three Keys to Maximizing Impact. First edition. San Francisco, California: Jossey-Bass, 2014.

Fullan, Michael, et al. The Principal: Three Keys to Maximizing Impact. First edition. Jossey-Bass, 2014.