United States. Environmental Protection Agency. Office of Transportation and Air Quality. (2012). Greenhouse gas emissions standards and fuel efficiency standards for medium- and heavy-duty engines and vehicles: Implementation workshop (Second edition.). 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. Greenhouse Gas Emissions Standards and Fuel Efficiency Standards for Medium- and Heavy-duty Engines and Vehicles: Implementation Workshop. Second edition. [Washington, D.C.]: U.S. Environmental Protection Agency, Office of Transportation and Air Quality, 2012.
MLA (9th ed.) CitationUnited States. Environmental Protection Agency. Office of Transportation and Air Quality. Greenhouse Gas Emissions Standards and Fuel Efficiency Standards for Medium- and Heavy-duty Engines and Vehicles: Implementation Workshop. Second edition. U.S. Environmental Protection Agency, Office of Transportation and Air Quality, 2012.