Cita APA (7a ed.)

Great Britain. Sovereign, Great Britain. Public Record Office, & Harvester Microform (Firm). Ancient correspondence.

Cita Chicago Style (17a ed.)

Great Britain. Sovereign, Great Britain. Public Record Office, y Harvester Microform (Firm). Ancient Correspondence.

Cita MLA (8a ed.)

Great Britain. Sovereign, et al. Ancient Correspondence.