APA

United States, United States, . (2017). Air quality and children's health: joint hearing before the Subcommittee on Clean Air and Nuclear Safety and the Subcommittee on Children's Health and Environmental Responsibility of the Committee on Environment and Public Works, United States Senate, One Hundred Twelfth Congress, first session, June 8, 2011. Washington: U.S. Government Publishing Office.

Chicago

United States, United States, . 2017. Air quality and children's health: joint hearing before the Subcommittee on Clean Air and Nuclear Safety and the Subcommittee on Children's Health and Environmental Responsibility of the Committee on Environment and Public Works, United States Senate, One Hundred Twelfth Congress, first session, June 8, 2011. Washington: U.S. Government Publishing Office.

Harvard

United States, United States, . (2017). Air quality and children's health: joint hearing before the Subcommittee on Clean Air and Nuclear Safety and the Subcommittee on Children's Health and Environmental Responsibility of the Committee on Environment and Public Works, United States Senate, One Hundred Twelfth Congress, first session, June 8, 2011. Washington: U.S. Government Publishing Office.

MLA

United States, United States, . Air quality and children's health: joint hearing before the Subcommittee on Clean Air and Nuclear Safety and the Subcommittee on Children's Health and Environmental Responsibility of the Committee on Environment and Public Works, United States Senate, One Hundred Twelfth Congress, first session, June 8, 2011. Washington: U.S. Government Publishing Office. 2017.