Renu Sukharomana. 1998. Willingness to pay for water quality improvement : differences between continggent valuation and averting expenditure methods. , University of Nebraska;

Renu Sukharomana. Willingness to pay for water quality improvement : differences between continggent valuation and averting expenditure methods. . Lincoln, Nebraska:University of Nebraska, 1998.

Renu Sukharomana. (1998) Willingness to pay for water quality improvement : differences between continggent valuation and averting expenditure methods . University of Nebraska/Lincoln, Nebraska.