APA (7th ed.) Citation

United States. Environmental Protection Agency. Transportation and Regional Programs Division. (2004). Conformity SIP guidance. United States Environmental Protection Agency, Air and Radiation.

Chicago Style (17th ed.) Citation

United States. Environmental Protection Agency. Transportation and Regional Programs Division. Conformity SIP Guidance. Washington, D.C.: United States Environmental Protection Agency, Air and Radiation, 2004.

MLA (9th ed.) Citation

United States. Environmental Protection Agency. Transportation and Regional Programs Division. Conformity SIP Guidance. United States Environmental Protection Agency, Air and Radiation, 2004.