United States. Environmental Protection Agency. Office of Transportation and Air Quality. (2008). Direct final rule for approval of Louisiana's petition to relax the summer gasoline volatility standard for the Grant Parish area. U.S. Environmental Protection Agency, Office of Transportation and Air Quality.
Chicago Style (17th ed.) CitationUnited States. Environmental Protection Agency. Office of Transportation and Air Quality. Direct Final Rule for Approval of Louisiana's Petition to Relax the Summer Gasoline Volatility Standard for the Grant Parish Area. [Washington, D.C.]: U.S. Environmental Protection Agency, Office of Transportation and Air Quality, 2008.
MLA (9th ed.) CitationUnited States. Environmental Protection Agency. Office of Transportation and Air Quality. Direct Final Rule for Approval of Louisiana's Petition to Relax the Summer Gasoline Volatility Standard for the Grant Parish Area. U.S. Environmental Protection Agency, Office of Transportation and Air Quality, 2008.