APA

United States, United States, . (2017). The state of the world: national security threats and challenges : Committee on Armed Services, House of Representatives, One Hundred Fifteenth Congress, first session, hearing held February 1, 2017. Washington: U.S. Government Publishing Office.

Chicago

United States, United States, . 2017. The state of the world: national security threats and challenges : Committee on Armed Services, House of Representatives, One Hundred Fifteenth Congress, first session, hearing held February 1, 2017. Washington: U.S. Government Publishing Office.

Harvard

United States, United States, . (2017). The state of the world: national security threats and challenges : Committee on Armed Services, House of Representatives, One Hundred Fifteenth Congress, first session, hearing held February 1, 2017. Washington: U.S. Government Publishing Office.

MLA

United States, United States, . The state of the world: national security threats and challenges : Committee on Armed Services, House of Representatives, One Hundred Fifteenth Congress, first session, hearing held February 1, 2017. Washington: U.S. Government Publishing Office. 2017.