Great Britain. Prime Minister & Great Britain. Public Record Office. (1972). Operational correspondence and papers. Public Record Office.
Chicago-Zitierstil (17. Ausg.)Great Britain. Prime Minister und Great Britain. Public Record Office. Operational Correspondence and Papers. London: Public Record Office, 1972.
MLA-Zitierstil (8. Ausg.)Great Britain. Prime Minister und Great Britain. Public Record Office. Operational Correspondence and Papers. Public Record Office, 1972.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.