Wang, H., & Whittington, D. (2000). Willingness to pay for air quality improvements in Sofia, Bulgaria. Washington, DC: The World Bank, Development Research Group, Infrastructure and Environment.
Chicago Style CitationWang, Hua, and Dale Whittington. Willingness to Pay for Air Quality Improvements in Sofia, Bulgaria. Washington, DC: The World Bank, Development Research Group, Infrastructure and Environment, 2000.
MLA CitationWang, Hua, and Dale Whittington. Willingness to Pay for Air Quality Improvements in Sofia, Bulgaria. Washington, DC: The World Bank, Development Research Group, Infrastructure and Environment, 2000.
Warning: These citations may not always be 100% accurate.