United States. Office of Personnel Management. Retirement and Insurance Group. (2001). Applying for immediate retirement under the Federal Employees Retirement System (Rev. May 2001.). U.S. Office of Personnel Management, Retirement & Insurance Service.
Chicago Style (17th ed.) CitationUnited States. Office of Personnel Management. Retirement and Insurance Group. Applying for Immediate Retirement Under the Federal Employees Retirement System. Rev. May 2001. Boyers, PA: U.S. Office of Personnel Management, Retirement & Insurance Service, 2001.
MLA (9th ed.) CitationUnited States. Office of Personnel Management. Retirement and Insurance Group. Applying for Immediate Retirement Under the Federal Employees Retirement System. Rev. May 2001. U.S. Office of Personnel Management, Retirement & Insurance Service, 2001.