APA

United States, . (2018). Outdoor recreation: vast impact of the great outdoors : hearing before the subcommittee on Digital Commerce and Consumer Protection of the Committee on Energy and Commerce, House of Representatives, One Hundred Fifteenth Congress, first session, April 27, 2017. Washington: U.S. Government Publishing Office.

Chicago

United States, . 2018. Outdoor recreation: vast impact of the great outdoors : hearing before the subcommittee on Digital Commerce and Consumer Protection of the Committee on Energy and Commerce, House of Representatives, One Hundred Fifteenth Congress, first session, April 27, 2017. Washington: U.S. Government Publishing Office.

Harvard

United States, . (2018). Outdoor recreation: vast impact of the great outdoors : hearing before the subcommittee on Digital Commerce and Consumer Protection of the Committee on Energy and Commerce, House of Representatives, One Hundred Fifteenth Congress, first session, April 27, 2017. Washington: U.S. Government Publishing Office.

MLA

United States, . Outdoor recreation: vast impact of the great outdoors : hearing before the subcommittee on Digital Commerce and Consumer Protection of the Committee on Energy and Commerce, House of Representatives, One Hundred Fifteenth Congress, first session, April 27, 2017. Washington: U.S. Government Publishing Office. 2018.