4Samdahl D M, Robertson R. Social determinants of environmental concern: Specification and test of the model. Environment and Behavior, 1989, 21 (1): 57-81.
5Ajzen I. The theory of planned behavior. Organizational Behavior and Human Decision Processes, 1991, 50(2): 179-211.
6Bolder O J. The prediction of household recycling of newspapers: The role of attitudes, intentions, and situa- tional factors. Journal of Applied Social Psychology, 1995, 25(5): 440-462.
7Cheung S F, Chan D K S, Wong Z S Y. Reexamining the theory of planned behavior in understanding wastepaper recycling. Environment and Behavior, 1999, 31(5): 587-612.
8Sparks P, Shepherd R. Self-identity and the theory of planned behavior: Assessing the role of identification with "green consumerism" . Social Psychology Quarterly, 1992, 55(4): 388-399.
9Stern P C, Dietz T, Kalof L. Value orientations, gender, and environmental concern. Environment and Behavior, 1993, 25(5): 322-348.
10Inglehart R. The silent revolution in Europe: Intergenerational change in post-industrial societies. The American Political Science Review, 1971, 65(4): 991-1017.