United States. Congress. House. Committee on Science and Technology. Subcommittee on Investigations and Oversight & ProQuest (Firm). (2008). Disappearing polar bears and permafrost: Is a global warming tipping point embedded in the ice? : hearing before the Subcommittee on Investigations and Oversight of the Committee on Science and Technology, House of Representatives, One Hundred Tenth Congress, first session, October 17, 2007. U.S. G.P.O..
Chicago Style (17th ed.) CitationUnited States. Congress. House. Committee on Science and Technology. Subcommittee on Investigations and Oversight and ProQuest (Firm). Disappearing Polar Bears and Permafrost: Is a Global Warming Tipping Point Embedded in the Ice? : Hearing Before the Subcommittee on Investigations and Oversight of the Committee on Science and Technology, House of Representatives, One Hundred Tenth Congress, First Session, October 17, 2007. Washington: U.S. G.P.O., 2008.
MLA (9th ed.) CitationUnited States. Congress. House. Committee on Science and Technology. Subcommittee on Investigations and Oversight and ProQuest (Firm). Disappearing Polar Bears and Permafrost: Is a Global Warming Tipping Point Embedded in the Ice? : Hearing Before the Subcommittee on Investigations and Oversight of the Committee on Science and Technology, House of Representatives, One Hundred Tenth Congress, First Session, October 17, 2007. U.S. G.P.O., 2008.