Systems Applications, Inc, United States. Environmental Protection Agency. Region VIII, & Anderson, G. E. (1977). Air quality in the Denver Metropolitan Region: 1974-2000. Environmental Protection Agency, Region VIII.
Chicago Style (17th ed.) CitationSystems Applications, Inc, United States. Environmental Protection Agency. Region VIII, and G. E. Anderson. Air Quality in the Denver Metropolitan Region: 1974-2000. Denver, Colo.: Environmental Protection Agency, Region VIII, 1977.
MLA (9th ed.) CitationSystems Applications, Inc, et al. Air Quality in the Denver Metropolitan Region: 1974-2000. Environmental Protection Agency, Region VIII, 1977.
Warning: These citations may not always be 100% accurate.