APA (7th ed.) Citation

Great Britain. Colonial Office & Great Britain. Public Record Office. (1971). Colonies, general. Public Record Office.

Chicago Style (17th ed.) Citation

Great Britain. Colonial Office and Great Britain. Public Record Office. Colonies, General. London: Public Record Office, 1971.

MLA (8th ed.) Citation

Great Britain. Colonial Office and Great Britain. Public Record Office. Colonies, General. Public Record Office, 1971.