Great Britain. Prime Minister & Great Britain. Public Record Office. (1972). Operational correspondence and papers. Public Record Office.
Citação do estilo Chicago (17ª ed.)Great Britain. Prime Minister e Great Britain. Public Record Office. Operational Correspondence and Papers. London: Public Record Office, 1972.
Citação MLA (8ª ed.)Great Britain. Prime Minister e Great Britain. Public Record Office. Operational Correspondence and Papers. Public Record Office, 1972.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.