APA

United States, . (2019). The need for leadership to combat climate change and protect national security: hearing before the Committee on Oversight and Reform, House of Representatives, One Hundred Sixteenth Congress, first session, April 9, 2019. Washington: U.S. Government Publishing Office.

Chicago

United States, . 2019. The need for leadership to combat climate change and protect national security: hearing before the Committee on Oversight and Reform, House of Representatives, One Hundred Sixteenth Congress, first session, April 9, 2019. Washington: U.S. Government Publishing Office.

Harvard

United States, . (2019). The need for leadership to combat climate change and protect national security: hearing before the Committee on Oversight and Reform, House of Representatives, One Hundred Sixteenth Congress, first session, April 9, 2019. Washington: U.S. Government Publishing Office.

MLA

United States, . The need for leadership to combat climate change and protect national security: hearing before the Committee on Oversight and Reform, House of Representatives, One Hundred Sixteenth Congress, first session, April 9, 2019. Washington: U.S. Government Publishing Office. 2019.