APA (7th ed.) Citation

Boyle, L. E. (2001). A survey of the Vatican archives and of its medieval holdings (Rev. ed.). Pontifical Institute of Mediaeval Studies.

Chicago Style (17th ed.) Citation

Boyle, Leonard E. A Survey of the Vatican Archives and of Its Medieval Holdings. Rev. ed. Toronto: Pontifical Institute of Mediaeval Studies, 2001.

MLA (9th ed.) Citation

Boyle, Leonard E. A Survey of the Vatican Archives and of Its Medieval Holdings. Rev. ed. Pontifical Institute of Mediaeval Studies, 2001.