Edmunds, S. W., & Letey, J. (1973). Environmental administration. McGraw-Hill.
Cita Chicago (17th ed.)Edmunds, Stahrl W., i John Letey. Environmental Administration. New York,: McGraw-Hill, 1973.
Cita MLA (8th ed.)Edmunds, Stahrl W., i John Letey. Environmental Administration. McGraw-Hill, 1973.
Atenció: Aquestes cites poden no estar 100% correctes.