Möser, G., & Bamberg, S. (2008). The effectiveness of soft transport policy measures: A critical assessment and meta-analysis of empirical evidence. Journal of Environmental Psychology, 28(1), 10-26.

Tight, M., Vicat, A., Bristow, A., Pridmore, A., & May, A. (2007). An Exploration of Household Response to Personal Travel Carbon-Reduction Targets. International Journal of Sustainable Transportation, 1(3), 143-159.