APA
United States, . (1998). Global climate change: hearings before the Committee on Environment and Public Works, United States Senate, One Hundred Fifth Congress, first session on reviewing the effects of greenhouse gases on global weather conditions and assessing international policy options to reduce the negative impacts of climate change, July 10 and 17, 1997. Washington: U.S. Government Printing Office.
Chicago
United States, . 1998. Global climate change: hearings before the Committee on Environment and Public Works, United States Senate, One Hundred Fifth Congress, first session on reviewing the effects of greenhouse gases on global weather conditions and assessing international policy options to reduce the negative impacts of climate change, July 10 and 17, 1997. Washington: U.S. Government Printing Office.
Harvard
United States, . (1998). Global climate change: hearings before the Committee on Environment and Public Works, United States Senate, One Hundred Fifth Congress, first session on reviewing the effects of greenhouse gases on global weather conditions and assessing international policy options to reduce the negative impacts of climate change, July 10 and 17, 1997. Washington: U.S. Government Printing Office.
MLA
United States, . Global climate change: hearings before the Committee on Environment and Public Works, United States Senate, One Hundred Fifth Congress, first session on reviewing the effects of greenhouse gases on global weather conditions and assessing international policy options to reduce the negative impacts of climate change, July 10 and 17, 1997. Washington: U.S. Government Printing Office. 1998.