Sixtus Dietrich

Cauchie · Socit Franaise de Musicologie

Pope Sixtus Iv

Z. et al. · Notes and Queries

Pope Sixtus V

E. et al. · Notes and Queries

191 To Sixtus

Elizabeth and Sixtus

Notes and Queries

194 To Sixtus

Postscript to the Sixtus Affair

Hevesy · Council on Foreign Relations

Sixtus V and the Quirinal

Marder · Journal of the Society of Architectural Historians

Pollaiuolo's Tomb of Pope Sixtus IV

Ettlinger · Journal of the Warburg and Courtauld Institutes