APA (7th ed.) Citation

United States. National Archives and Records Administration. Southwest Region. (1989). Guide to records in the National Archives: Southwest Region. National Archives and Records Administration.

Chicago Style (17th ed.) Citation

United States. National Archives and Records Administration. Southwest Region. Guide to Records in the National Archives: Southwest Region. Washington, DC: National Archives and Records Administration, 1989.

MLA (9th ed.) Citation

United States. National Archives and Records Administration. Southwest Region. Guide to Records in the National Archives: Southwest Region. National Archives and Records Administration, 1989.