APA

United States, . (2020). The role of the U.S. Geological Survey and the U.S. Forest Service in preparing for and responding to natural hazard events, as well as the current status of mapping and monitoring systems: hearing before the Committee on Energy and Natural Resources, United States Senate, One Hundred Fifteenth Congress, second session, January 30, 2018. Washington: U.S. Government Publishing Office.

Chicago

United States, . 2020. The role of the U.S. Geological Survey and the U.S. Forest Service in preparing for and responding to natural hazard events, as well as the current status of mapping and monitoring systems: hearing before the Committee on Energy and Natural Resources, United States Senate, One Hundred Fifteenth Congress, second session, January 30, 2018. Washington: U.S. Government Publishing Office.

Harvard

United States, . (2020). The role of the U.S. Geological Survey and the U.S. Forest Service in preparing for and responding to natural hazard events, as well as the current status of mapping and monitoring systems: hearing before the Committee on Energy and Natural Resources, United States Senate, One Hundred Fifteenth Congress, second session, January 30, 2018. Washington: U.S. Government Publishing Office.

MLA

United States, . The role of the U.S. Geological Survey and the U.S. Forest Service in preparing for and responding to natural hazard events, as well as the current status of mapping and monitoring systems: hearing before the Committee on Energy and Natural Resources, United States Senate, One Hundred Fifteenth Congress, second session, January 30, 2018. Washington: U.S. Government Publishing Office. 2020.