APA

United States, . (2018). The threat posed by electromagnetic pulse and policy options to protect energy infrastructure and to improve capabilities for adequate system restoration: hearing before the Committee on Energy and Natural Resources, United States Senate, One Hundred Fifteenth Congress, first session, May 4, 2017. Washington: U.S. Government Publishing Office.

Chicago

United States, . 2018. The threat posed by electromagnetic pulse and policy options to protect energy infrastructure and to improve capabilities for adequate system restoration: hearing before the Committee on Energy and Natural Resources, United States Senate, One Hundred Fifteenth Congress, first session, May 4, 2017. Washington: U.S. Government Publishing Office.

Harvard

United States, . (2018). The threat posed by electromagnetic pulse and policy options to protect energy infrastructure and to improve capabilities for adequate system restoration: hearing before the Committee on Energy and Natural Resources, United States Senate, One Hundred Fifteenth Congress, first session, May 4, 2017. Washington: U.S. Government Publishing Office.

MLA

United States, . The threat posed by electromagnetic pulse and policy options to protect energy infrastructure and to improve capabilities for adequate system restoration: hearing before the Committee on Energy and Natural Resources, United States Senate, One Hundred Fifteenth Congress, first session, May 4, 2017. Washington: U.S. Government Publishing Office. 2018.