A survey of the Vatican archives and of its medieval holdings /
Leonard E. Boyle.

APA Citation

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

MLA Citation

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

Warning: These citations may not always be complete (especially for serials).