APA

United States, . (2019). Sixty years of NASA leadership in human space exploration: past, present, and future : hearing before the Subcommittee on Space, Committee on Science, Space, and Technology, House of Representatives, One Hundred Fifteenth Congress, second session, September 26, 2018. Washington: U.S. Government Publishing Office.

Chicago

United States, . 2019. Sixty years of NASA leadership in human space exploration: past, present, and future : hearing before the Subcommittee on Space, Committee on Science, Space, and Technology, House of Representatives, One Hundred Fifteenth Congress, second session, September 26, 2018. Washington: U.S. Government Publishing Office.

Harvard

United States, . (2019). Sixty years of NASA leadership in human space exploration: past, present, and future : hearing before the Subcommittee on Space, Committee on Science, Space, and Technology, House of Representatives, One Hundred Fifteenth Congress, second session, September 26, 2018. Washington: U.S. Government Publishing Office.

MLA

United States, . Sixty years of NASA leadership in human space exploration: past, present, and future : hearing before the Subcommittee on Space, Committee on Science, Space, and Technology, House of Representatives, One Hundred Fifteenth Congress, second session, September 26, 2018. Washington: U.S. Government Publishing Office. 2019.