Thogersen, J., & Ölander, F. (2002). Human values and the emergence of a sustainable consumption pattern: A panel study. Journal of Economic Psychology, 23(5), 605-630.

Wray-Lake, L., Flanagan, C., & Osgood, D. (2010). Examining trends in adolescent environmental attitudes, beliefs, and behaviors across three decades. Environment and Behavior, 42(1), 61-85.