United States. Congress. Senate. Committee on Commerce, Science, and Transportation. Subcommittee on Space, Aeronautics, and Related Sciences. (2013). National imperatives for earth science research: Hearing before the Subcommittee on Space, Aeronautics, and Related Sciences of the Committee on Commerce, Science, and Transportation, United States Senate, One Hundred Tenth Congress, first session, March 7, 2007. U.S. G.P.O..
Chicago Style (17th ed.) CitationUnited States. Congress. Senate. Committee on Commerce, Science, and Transportation. Subcommittee on Space, Aeronautics, and Related Sciences. National Imperatives for Earth Science Research: Hearing Before the Subcommittee on Space, Aeronautics, and Related Sciences of the Committee on Commerce, Science, and Transportation, United States Senate, One Hundred Tenth Congress, First Session, March 7, 2007. Washington: U.S. G.P.O., 2013.
MLA (9th ed.) CitationUnited States. Congress. Senate. Committee on Commerce, Science, and Transportation. Subcommittee on Space, Aeronautics, and Related Sciences. National Imperatives for Earth Science Research: Hearing Before the Subcommittee on Space, Aeronautics, and Related Sciences of the Committee on Commerce, Science, and Transportation, United States Senate, One Hundred Tenth Congress, First Session, March 7, 2007. U.S. G.P.O., 2013.