United States. Congress. House. Committee on Ways and Means. Subcommittee on Social Security. (2005). Sixth in a series of subcommittee hearings on protecting and strengthening Social Security: Hearing before the Subcommittee on Social Security of the Committee on Ways and Means, U.S. House of Representatives, One Hundred Ninth Congress, first session, June 16, 2005. Washington: U.S. Government Printing Office.

United States. Congress. House. Committee on Ways and Means. Subcommittee on Social Security. Sixth in a Series of Subcommittee Hearings On Protecting and Strengthening Social Security: Hearing Before the Subcommittee On Social Security of the Committee On Ways and Means, U.S. House of Representatives, One Hundred Ninth Congress, First Session, June 16, 2005. Washington: U.S. Government Printing Office, 2005.

United States. Congress. House. Committee on Ways and Means. Subcommittee on Social Security. Sixth in a Series of Subcommittee Hearings On Protecting and Strengthening Social Security: Hearing Before the Subcommittee On Social Security of the Committee On Ways and Means, U.S. House of Representatives, One Hundred Ninth Congress, First Session, June 16, 2005. Washington: U.S. Government Printing Office, 2005.