APA

United States, . (2008). The Internal Revenue Service's use of private debt collection companies to collect federal income taxes: hearing before the Committee on Ways and Means, U.S. House of Representatives, One Hundred Tenth Congress, first session, May 23, 2007. Washington: U.S. G.P.O.

Chicago

United States, . 2008. The Internal Revenue Service's use of private debt collection companies to collect federal income taxes: hearing before the Committee on Ways and Means, U.S. House of Representatives, One Hundred Tenth Congress, first session, May 23, 2007. Washington: U.S. G.P.O.

Harvard

United States, . (2008). The Internal Revenue Service's use of private debt collection companies to collect federal income taxes: hearing before the Committee on Ways and Means, U.S. House of Representatives, One Hundred Tenth Congress, first session, May 23, 2007. Washington: U.S. G.P.O.

MLA

United States, . The Internal Revenue Service's use of private debt collection companies to collect federal income taxes: hearing before the Committee on Ways and Means, U.S. House of Representatives, One Hundred Tenth Congress, first session, May 23, 2007. Washington: U.S. G.P.O. 2008.