Mexico Air Quality Management Team & Vergara, W. (2002). Improving air quality in metropolitan Mexico City: An economic evaluation. World Bank Latin America and the Caribbean Region.

Mexico Air Quality Management Team and Walter Vergara. Improving Air Quality in Metropolitan Mexico City: An Economic Evaluation. Washington, D.C: World Bank Latin America and the Caribbean Region, 2002.

Mexico Air Quality Management Team and Walter Vergara. Improving Air Quality in Metropolitan Mexico City: An Economic Evaluation. World Bank Latin America and the Caribbean Region, 2002.