//-->
The land ethic realized : some social psychological explanations for changing environmental attitudes
Heberlein, Thomas A., (1974)
Social psychological assumptions of user attitude surveys : the case of the wildernism scale
Heberlein, Thomas A., (1973)
Fairness in the contingent valuation of environmental public goods: attitude toward paying for environmental improvements at two levels of scope
Jorgensen, Bradley S., (2001)