APA

United States, . (2012). Defending U.S. economic interests in the changing Arctic: is there a strategy? : hearing before the Subcommittee on Oceans, Atmosphere, Fisheries, and Coast Guard of the Committee on Commerce, Science, and Transportation, United States Senate, One Hundred Twelfth Congress, first session, July 27, 2011. Washington: U.S. G.P.O.

Chicago

United States, . 2012. Defending U.S. economic interests in the changing Arctic: is there a strategy? : hearing before the Subcommittee on Oceans, Atmosphere, Fisheries, and Coast Guard of the Committee on Commerce, Science, and Transportation, United States Senate, One Hundred Twelfth Congress, first session, July 27, 2011. Washington: U.S. G.P.O.

Harvard

United States, . (2012). Defending U.S. economic interests in the changing Arctic: is there a strategy? : hearing before the Subcommittee on Oceans, Atmosphere, Fisheries, and Coast Guard of the Committee on Commerce, Science, and Transportation, United States Senate, One Hundred Twelfth Congress, first session, July 27, 2011. Washington: U.S. G.P.O.

MLA

United States, . Defending U.S. economic interests in the changing Arctic: is there a strategy? : hearing before the Subcommittee on Oceans, Atmosphere, Fisheries, and Coast Guard of the Committee on Commerce, Science, and Transportation, United States Senate, One Hundred Twelfth Congress, first session, July 27, 2011. Washington: U.S. G.P.O. 2012.