APA (7th ed.) Citation

(2019). Federal and California light-duty vehicle emissions standards for air pollutants ([September 2019 edition].). United States Environmental Protection Agency.

Chicago Style (17th ed.) Citation

Federal and California Light-duty Vehicle Emissions Standards for Air Pollutants. [September 2019 edition]. [Washington, D.C.]: United States Environmental Protection Agency, 2019.

MLA (9th ed.) Citation

Federal and California Light-duty Vehicle Emissions Standards for Air Pollutants. [September 2019 edition]. United States Environmental Protection Agency, 2019.