APA (7th ed.) Citation

United States. Environmental Protection Agency. Office of Transportation and Air Quality. (2008). EPA finalizes regulations requiring onboard diagnostic systems on 2010 and later heavy-duty engines used in highway applications over 14,000 pounds; revisions to onboard diagnostic requirements for diesel highway heavy-duty applications under 14,000 pounds. 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. EPA Finalizes Regulations Requiring Onboard Diagnostic Systems on 2010 and Later Heavy-duty Engines Used in Highway Applications over 14,000 Pounds; Revisions to Onboard Diagnostic Requirements for Diesel Highway Heavy-duty Applications Under 14,000 Pounds. [Washington, DC]: U.S. Environmental Protection Agency, Office of Transportation and Air Quality, 2008.

MLA (9th ed.) Citation

United States. Environmental Protection Agency. Office of Transportation and Air Quality. EPA Finalizes Regulations Requiring Onboard Diagnostic Systems on 2010 and Later Heavy-duty Engines Used in Highway Applications over 14,000 Pounds; Revisions to Onboard Diagnostic Requirements for Diesel Highway Heavy-duty Applications Under 14,000 Pounds. U.S. Environmental Protection Agency, Office of Transportation and Air Quality, 2008.