APA

United States, . (2015). EPA approves request from Alabama to relax the summer gasoline volatility standard for the Birmingham area. [Washington, D.C.]: United States Environmental Protection Agency, Office of Transportation and Air Quality.

Chicago

United States, . 2015. EPA approves request from Alabama to relax the summer gasoline volatility standard for the Birmingham area. [Washington, D.C.]: United States Environmental Protection Agency, Office of Transportation and Air Quality.

Harvard

United States, . (2015). EPA approves request from Alabama to relax the summer gasoline volatility standard for the Birmingham area. [Washington, D.C.]: United States Environmental Protection Agency, Office of Transportation and Air Quality.

MLA

United States, . EPA approves request from Alabama to relax the summer gasoline volatility standard for the Birmingham area. [Washington, D.C.]: United States Environmental Protection Agency, Office of Transportation and Air Quality. 2015.