APA引文

American Library Association. Government Documents Round Table & Horn, J. (1991). Directory of government document collections & librarians (6th ed.). Congressional Information Service.

Chicago Style (17th ed.) Citation

American Library Association. Government Documents Round Table and Judy Horn. Directory of Government Document Collections & Librarians. 6th ed. Bethesda, MD: Congressional Information Service, 1991.

MLA引文

American Library Association. Government Documents Round Table and Judy Horn. Directory of Government Document Collections & Librarians. 6th ed. Congressional Information Service, 1991.