Cita APA (7a ed.)

Great Britain. Prime Minister & Great Britain. Public Record Office. (1972). Operational correspondence and papers. Public Record Office.

Cita Chicago Style (17a ed.)

Great Britain. Prime Minister y Great Britain. Public Record Office. Operational Correspondence and Papers. London: Public Record Office, 1972.

Cita MLA (8a ed.)

Great Britain. Prime Minister y Great Britain. Public Record Office. Operational Correspondence and Papers. Public Record Office, 1972.