Calendar of the patent rolls, preserved in the Public Record Office :
Henry VI, 1422-1461 /
prepared under the superintendence of the deputy keeper of the records.

APA Citation

Great Britain. Public Record Office. (19011910). Calendar of the patent rolls, preserved in the Public Record Office: Henry VI, 1422-1461. London: H. M. Stationery Office.

MLA Citation

Great Britain. Public Record Office. Calendar of the Patent Rolls, Preserved In the Public Record Office: Henry VI, 1422-1461. London: H. M. Stationery Office, 19011910.

Warning: These citations may not always be complete (especially for serials).