APA

United States, . (2000). Vaccines--finding the balance between public safety and personal choice: hearing before the Committee on Government Reform, House of Representatives, One Hundred Sixth Congress, first session, August 3, 1999. Washington: U.S. Government Printing Office.

Chicago

United States, . 2000. Vaccines--finding the balance between public safety and personal choice: hearing before the Committee on Government Reform, House of Representatives, One Hundred Sixth Congress, first session, August 3, 1999. Washington: U.S. Government Printing Office.

Harvard

United States, . (2000). Vaccines--finding the balance between public safety and personal choice: hearing before the Committee on Government Reform, House of Representatives, One Hundred Sixth Congress, first session, August 3, 1999. Washington: U.S. Government Printing Office.

MLA

United States, . Vaccines--finding the balance between public safety and personal choice: hearing before the Committee on Government Reform, House of Representatives, One Hundred Sixth Congress, first session, August 3, 1999. Washington: U.S. Government Printing Office. 2000.