Wills, I. (2007). Economics and the environment: A signalling and incentives approach (2nd ed.). Allen & Unwin.
Styl ChicagoWills, Ian. Economics and the Environment: A Signalling and Incentives Approach. 2nd ed. Australia: Allen & Unwin, 2007.
Citace podle MLAWills, Ian. Economics and the Environment: A Signalling and Incentives Approach. 2nd ed. Allen & Unwin, 2007.
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