(2000). Motivational psychology of human development: Developing motivation and motivating development. North-Holland Elsevier.
Chicago-Zitierstil (17. Ausg.)Motivational Psychology of Human Development: Developing Motivation and Motivating Development. Amsterdam, Netherlands New York: North-Holland Elsevier, 2000.
MLA-Zitierstil (9. Ausg.)Motivational Psychology of Human Development: Developing Motivation and Motivating Development. North-Holland Elsevier, 2000.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.