APA (7th ed.) Citation

Great Britain. Public Record Office. (1992). Current guide (1992 ed.). Public Record Office.

Chicago Style (17th ed.) Citation

Great Britain. Public Record Office. Current Guide. 1992 ed. London ; Richmond, England: Public Record Office, 1992.

MLA (8th ed.) Citation

Great Britain. Public Record Office. Current Guide. 1992 ed. Public Record Office, 1992.