United States. Congress. Senate. Committee on Commerce, Science, and Transportation. Subcommittee on Science and Space. (2014). Risks, opportunities, and oversight of commercial space: Hearing before the Subcommittee on Science and Space of the Committee on Commerce, Science, and Transportation, United States Senate, One Hundred Twelfth Congress, second session, June 20, 2012. U.S. Government Printing Office.
Chicago Style (17th ed.) CitationUnited States. Congress. Senate. Committee on Commerce, Science, and Transportation. Subcommittee on Science and Space. Risks, Opportunities, and Oversight of Commercial Space: Hearing Before the Subcommittee on Science and Space of the Committee on Commerce, Science, and Transportation, United States Senate, One Hundred Twelfth Congress, Second Session, June 20, 2012. Washington: U.S. Government Printing Office, 2014.
MLA (9th ed.) CitationUnited States. Congress. Senate. Committee on Commerce, Science, and Transportation. Subcommittee on Science and Space. Risks, Opportunities, and Oversight of Commercial Space: Hearing Before the Subcommittee on Science and Space of the Committee on Commerce, Science, and Transportation, United States Senate, One Hundred Twelfth Congress, Second Session, June 20, 2012. U.S. Government Printing Office, 2014.