Baltes, Paul B. Center for Lifespan Psychology, Max Planck Institute for Human Development, Max Planck Society; Max Planck Institute for Human Development, Max Planck Society;
Lachman, M. E., & Baltes, P. B. (1994). Psychological ageing in lifespan perspective. In M. Rutter, & D. F. Hay (Eds.), Development through life: A handbook for clinicians (pp. 583-604). Oxford: Blackwell.