APA (7th ed.) Citation

United States. Environmental Protection Agency. Office of Transportation and Air Quality. (2012). Yellow marker 2012 transition guidance. U.S. Environmental Protection Agency, Office of Transportation and Air Quality.

Chicago Style (17th ed.) Citation

United States. Environmental Protection Agency. Office of Transportation and Air Quality. Yellow Marker 2012 Transition Guidance. [Washington, D.C.]: U.S. Environmental Protection Agency, Office of Transportation and Air Quality, 2012.

MLA (9th ed.) Citation

United States. Environmental Protection Agency. Office of Transportation and Air Quality. Yellow Marker 2012 Transition Guidance. U.S. Environmental Protection Agency, Office of Transportation and Air Quality, 2012.