APA (7th ed.) Citation

United States. National Archives and Records Service. Office of Records Management & Sheppard, M. (1955). Plain letters. The Office.

Chicago Style (17th ed.) Citation

United States. National Archives and Records Service. Office of Records Management and Mona Sheppard. Plain Letters. Washington: The Office, 1955.

MLA (8th ed.) Citation

United States. National Archives and Records Service. Office of Records Management and Mona Sheppard. Plain Letters. The Office, 1955.

Warning: These citations may not always be 100% accurate.