APA aipamena

United States. National Archives and Records Service. Office of Records Management. (1971). Managing the mail.

Chicago Style aipamena

United States. National Archives and Records Service. Office of Records Management. Managing the Mail. [Washington], 1971.

MLA aipamena

United States. National Archives and Records Service. Office of Records Management. Managing the Mail. 1971.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.