Vergara, W., & Vergara, W. (2002). Improving air quality in metropolitan Mexico City: An economic valuation. Washington, DC: The World Bank, Latin America and the Caribbean Region, Environmentally and Socially Sustainable Development Sector Unit.
Citación estilo ChicagoVergara, Walter, y Walter Vergara. Improving Air Quality in Metropolitan Mexico City: An Economic Valuation. Washington, DC: The World Bank, Latin America and the Caribbean Region, Environmentally and Socially Sustainable Development Sector Unit, 2002.
Cita MLAVergara, Walter, y Walter Vergara. Improving Air Quality in Metropolitan Mexico City: An Economic Valuation. Washington, DC: The World Bank, Latin America and the Caribbean Region, Environmentally and Socially Sustainable Development Sector Unit, 2002.