APA (7th ed.) Citation

Letter of Franciscus a S. Maria, Irish Franciscan, to Cardinal Barberini (?), saying he is in Madrid to promote the interests of the Earls of Tyrone and Tyrconnell with the King of Spain, etc., Oct. 8, 1640.

Chicago Style (17th ed.) Citation

Letter of Franciscus a S. Maria, Irish Franciscan, to Cardinal Barberini (?), Saying He Is in Madrid to Promote the Interests of the Earls of Tyrone and Tyrconnell with the King of Spain, Etc., Oct. 8, 1640.

MLA (9th ed.) Citation

Letter of Franciscus a S. Maria, Irish Franciscan, to Cardinal Barberini (?), Saying He Is in Madrid to Promote the Interests of the Earls of Tyrone and Tyrconnell with the King of Spain, Etc., Oct. 8, 1640.

Warning: These citations may not always be 100% accurate.