U.S. National Archives and Records Service. General Services Administration. Records Management Division. (1955). Records management handbook: Managing correspondence, plain letters. Superintendent of Documents, U.S. Government Printing Office.
Cita Chicago Style (17a ed.)U.S. National Archives and Records Service. General Services Administration. Records Management Division. Records Management Handbook: Managing Correspondence, Plain Letters. [Washington, D.C: Superintendent of Documents, U.S. Government Printing Office, 1955.
Cita MLA (9a ed.)U.S. National Archives and Records Service. General Services Administration. Records Management Division. Records Management Handbook: Managing Correspondence, Plain Letters. Superintendent of Documents, U.S. Government Printing Office, 1955.