Library of Congress. Congressional Research Service & ProQuest (Firm). (2008). Average Years of Service for the Members of the Senate and House of Representatives, First -110th Congresses. [publisher not identified].
Chicago Style (17th ed.) CitationLibrary of Congress. Congressional Research Service and ProQuest (Firm). Average Years of Service for the Members of the Senate and House of Representatives, First -110th Congresses. [Place of publication not identified]: [publisher not identified], 2008.
MLA (9th ed.) CitationLibrary of Congress. Congressional Research Service and ProQuest (Firm). Average Years of Service for the Members of the Senate and House of Representatives, First -110th Congresses. [publisher not identified], 2008.
Warning: These citations may not always be 100% accurate.