Gaya APA

Phillips, J, J. et al (2015). Measuring the success of leadership development : a step-by-step guide for measuring impact and calculating ROI . United States of America: ATD Press.

Gaya MLA

Phillips, Jack, J.. et al. "Measuring the success of leadership development : a step-by-step guide for measuring impact and calculating ROI". United States of America: ATD Press, 2015. FIC.