Ridker, R. G. (1967). Economic costs of air pollution: Studies in measurement. F. A. Praeger.
Cita Chicago (17th ed.)Ridker, Ronald Gene. Economic Costs of Air Pollution: Studies in Measurement. New York: F. A. Praeger, 1967.
Cita MLA (8th ed.)Ridker, Ronald Gene. Economic Costs of Air Pollution: Studies in Measurement. F. A. Praeger, 1967.
Atenció: Aquestes cites poden no estar 100% correctes.