Elsom, D. M. (1992). Atmospheric pollution: A global problem (2nd ed.). Blackwell.
Cita Chicago (17th ed.)Elsom, Derek M. Atmospheric Pollution: A Global Problem. 2nd ed. Oxford: Blackwell, 1992.
Cita MLA (9th ed.)Elsom, Derek M. Atmospheric Pollution: A Global Problem. 2nd ed. Blackwell, 1992.
Atenció: Aquestes cites poden no estar 100% correctes.