APA (7th ed.) Citation

Great Britain. State Paper Office & Great Britain. Public Record Office. (1974). Secretaries of State, state papers foreign. Public Record Office.

Chicago Style (17th ed.) Citation

Great Britain. State Paper Office and Great Britain. Public Record Office. Secretaries of State, State Papers Foreign. London: Public Record Office, 1974.

MLA (8th ed.) Citation

Great Britain. State Paper Office and Great Britain. Public Record Office. Secretaries of State, State Papers Foreign. Public Record Office, 1974.