APA (7th ed.) Citation

Gwynn, A. Some notes on the history of the Book of Kells.

Chicago Style (17th ed.) Citation

Gwynn, Aubrey. Some Notes on the History of the Book of Kells.

MLA (9th ed.) Citation

Gwynn, Aubrey. Some Notes on the History of the Book of Kells.

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