APA (7th ed.) Citation

Great Britain. Foreign Office & Great Britain. Public Record Office. (1973). Consulates and Legation: Letter books. Public Record Office.

Chicago Style (17th ed.) Citation

Great Britain. Foreign Office and Great Britain. Public Record Office. Consulates and Legation: Letter Books. London: Public Record Office, 1973.

MLA (8th ed.) Citation

Great Britain. Foreign Office and Great Britain. Public Record Office. Consulates and Legation: Letter Books. Public Record Office, 1973.