APA (7th ed.) Citation

(2015). Air quality guide for ozone. United States Environmental Protection Agency, Office of Air and Radiation.

Chicago Style (17th ed.) Citation

Air Quality Guide for Ozone. [Washington, D.C.]: United States Environmental Protection Agency, Office of Air and Radiation, 2015.

MLA (9th ed.) Citation

Air Quality Guide for Ozone. United States Environmental Protection Agency, Office of Air and Radiation, 2015.