Chopra, K. R. (1999). Valuation of forest resources: An application of the contingent valuation method. Institute of Economic Growth.
Chicago-referens (17:e uppl.)Chopra, Kanchan Ratna. Valuation of Forest Resources: An Application of the Contingent Valuation Method. Delhi: Institute of Economic Growth, 1999.
MLA-referens (8:e uppl.)Chopra, Kanchan Ratna. Valuation of Forest Resources: An Application of the Contingent Valuation Method. Institute of Economic Growth, 1999.
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