Ashby, E., & Anderson, M. (1981). The politics of clean air. Clarendon Press ; Oxford University Press.
Cita Chicago (17th ed.)Ashby, Eric, i Mary Anderson. The Politics of Clean Air. Oxford : New York: Clarendon Press ; Oxford University Press, 1981.
Cita MLA (9th ed.)Ashby, Eric, i Mary Anderson. The Politics of Clean Air. Clarendon Press ; Oxford University Press, 1981.
Atenció: Aquestes cites poden no estar 100% correctes.