Phillips, J. J. (2003). Return on investment in training and performance improvement programs (2nd ed.). Butterworth-Heinemann.
Chicago-Zitierstil (17. Ausg.)Phillips, Jack J. Return on Investment in Training and Performance Improvement Programs. 2nd ed. Boston, MA: Butterworth-Heinemann, 2003.
MLA-Zitierstil (9. Ausg.)Phillips, Jack J. Return on Investment in Training and Performance Improvement Programs. 2nd ed. Butterworth-Heinemann, 2003.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.