APA

United States, . (2006). Biodefense and pandemic influenza: hearing before a subcommittee of the Committee on Appropriations, United States Senate, One Hundred Ninth Congress, second session, special hearing, May 23, 2006, Washington, DC. Washington: U.S. Government Printing Office.

Chicago

United States, . 2006. Biodefense and pandemic influenza: hearing before a subcommittee of the Committee on Appropriations, United States Senate, One Hundred Ninth Congress, second session, special hearing, May 23, 2006, Washington, DC. Washington: U.S. Government Printing Office.

Harvard

United States, . (2006). Biodefense and pandemic influenza: hearing before a subcommittee of the Committee on Appropriations, United States Senate, One Hundred Ninth Congress, second session, special hearing, May 23, 2006, Washington, DC. Washington: U.S. Government Printing Office.

MLA

United States, . Biodefense and pandemic influenza: hearing before a subcommittee of the Committee on Appropriations, United States Senate, One Hundred Ninth Congress, second session, special hearing, May 23, 2006, Washington, DC. Washington: U.S. Government Printing Office. 2006.