APA (7th ed.) Citation

Six letters, in Latin, Written by Irish pilgrims, four to Bishop Franco of Liège, 10th c.

Chicago Style (17th ed.) Citation

Six Letters, in Latin, Written by Irish Pilgrims, Four to Bishop Franco of Liège, 10th C.

MLA (9th ed.) Citation

Six Letters, in Latin, Written by Irish Pilgrims, Four to Bishop Franco of Liège, 10th C.

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