Thom, G. C., & Ott, W. (1975). Air pollution indices: A compendium and assessment of indices used in the United States and Canada. Council on environmental quality, U.S. Environmental Protection Agency.
Παραπομπή σε μορφή Chicago (17η εκδ.)Thom, Gary C., και Wayne Ott. Air Pollution Indices: A Compendium and Assessment of Indices Used in the United States and Canada. Council on environmental quality, U.S. Environmental Protection Agency, 1975.
Παραπομπή σε μορφή MLA (9th εκδ.)Thom, Gary C., και Wayne Ott. Air Pollution Indices: A Compendium and Assessment of Indices Used in the United States and Canada. Council on environmental quality, U.S. Environmental Protection Agency, 1975.
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