McAllister, I. & Studlar, D. T. (1999). Green versus brown: Explaining environmental commitment in Australia. Social Science Quarterly, 80, 4, 775-792.

Makki, M., Abd-El-Khalick, F., & Boujaoude, S. (2003). Lebanese secondary school students' environmental knowledge and attitudes. Environmental Education Research, 9(1), 21-33.

Hunter, L. M. (2000). A comparison of the environmental attitudes, concern, and behaviors of native-born and foreign-born U.S. residents. Population & Environment: a Journal of Interdisciplinary Studies, 21(6), 565-580.

Henriques, I., & Sadorsky, P. (1999). The relationship between environmental commitment and managerial perceptions of stakeholder importance. Academy of Mangement Journal, 42(1), 87-99.

Cottrell, S. P. (2003). Influence of sociodemographics and environmental attitudes on general responsible environmental behavior among recreational boaters. Environment and Behavior, 35(3), 347-375.

Corraliza, Jose A.; Berenguer, Jaime (2000). "Environmental values, beliefs, and actions: A situational approach.". Environment & Behavior, 32, 6, 832-848.

Bamberg, S. (2003). How does environmental concern influence specific environmentally related behaviors? A new answer to an old question. Journal of Environmental Psychology, 23(1), 21-32.

Ryley, T. J. (2008). The propensity for motorists to walk for short trips: Evidence from West Edinburgh. Transportation Research Part A: Policy and Practice, 42(4), 620-628.

Hume, C., Timperio, A., Salmon, J., Carver, A., Giles-Corti, B., & Crawford, D. (2009). Walking and Cycling to School: Predictors of Increases Among Children and Adolescents. American Journal of Preventive Medicine, 36(3), 195-200.

Poudenx, P. (2008). The effect of transportation policies on energy consumption and greenhouse gas emission from urban passenger transportation. Transportation Research Part A: Policy and Practice, 42(6), 901-909.