Measuring air quality : the new pollutant standards index

Chicago citation style
Measuring air quality : the new pollutant standards index. 1978. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/007418997. (Accessed December 18, 2018.)
APA citation style
(1978) Measuring air quality : the new pollutant standards index. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/007418997
MLA citation style
Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/007418997>.
Note: These citations are programmatically generated and may be incomplete.