Library of Congress. Congressional Research Service & ProQuest (Firm). (2003). House and Senate Vacancies: How are They Filled. [publisher not identified].
Chicago Style (17th ed.) CitationLibrary of Congress. Congressional Research Service and ProQuest (Firm). House and Senate Vacancies: How Are They Filled. [Place of publication not identified]: [publisher not identified], 2003.
MLA (9th ed.) CitationLibrary of Congress. Congressional Research Service and ProQuest (Firm). House and Senate Vacancies: How Are They Filled. [publisher not identified], 2003.
Warning: These citations may not always be 100% accurate.