APA

United States, . (1998). Environmental tobacco smoke: hearing before the Committee on Environment and Public Works, United States Senate, One Hundred Fifth Congress, second session, April 1, 1998. Washington: U.S. Government Printing Office.

Chicago

United States, . 1998. Environmental tobacco smoke: hearing before the Committee on Environment and Public Works, United States Senate, One Hundred Fifth Congress, second session, April 1, 1998. Washington: U.S. Government Printing Office.

Harvard

United States, . (1998). Environmental tobacco smoke: hearing before the Committee on Environment and Public Works, United States Senate, One Hundred Fifth Congress, second session, April 1, 1998. Washington: U.S. Government Printing Office.

MLA

United States, . Environmental tobacco smoke: hearing before the Committee on Environment and Public Works, United States Senate, One Hundred Fifth Congress, second session, April 1, 1998. Washington: U.S. Government Printing Office. 1998.