@book{181541,
	author = {Biblioteca apostolica vaticana and Sheehan, William J.,},
	title = {Bibliothecae apostolicae vaticanae incunabula : },
	publisher = {Biblioteca apostolica vaticana,},
	year = {1997.},
	series = {Studi e testi ; },
	address = {Città del Vaticano :}
}