Bateman, I. J., & Willis, K. G. (1999). Valuing environmental preferences: : theory and practice of the contingent valuation method in th US, EU, and developing countries. Oxford: Oxford University Press.
Παραπομπή Chicago StyleBateman, Ian J., and Kenneth G. Willis. Valuing Environmental Preferences: : Theory and Practice of the Contingent Valuation Method in Th US, EU, and Developing Countries. Oxford: Oxford University Press, 1999.
Παραπομπή MLABateman, Ian J., and Kenneth G. Willis. Valuing Environmental Preferences: : Theory and Practice of the Contingent Valuation Method in Th US, EU, and Developing Countries. Oxford: Oxford University Press, 1999.
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