APA (7th ed.) Citation

Boyle, L. E. (1972). A survey of the Vatican Archives and of its medieval holdings. Pontifical Institute of Mediaeval Studies.

Chicago Style (17th ed.) Citation

Boyle, Leonard E. A Survey of the Vatican Archives and of Its Medieval Holdings. Toronto: Pontifical Institute of Mediaeval Studies, 1972.

MLA (9th ed.) Citation

Boyle, Leonard E. A Survey of the Vatican Archives and of Its Medieval Holdings. Pontifical Institute of Mediaeval Studies, 1972.