D'Elia, A. F. (2009). A sudden terror: The plot to murder the Pope in Renaissance Rome. Harvard University Press.
Lua i Stíl Chicago (17ú heag.)D'Elia, Anthony F. A Sudden Terror: The Plot to Murder the Pope in Renaissance Rome. Cambridge, Mass.: Harvard University Press, 2009.
Lua MLA (9ú heag.)D'Elia, Anthony F. A Sudden Terror: The Plot to Murder the Pope in Renaissance Rome. Harvard University Press, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.