Columbia subject headings:
Biblioteca apostolica vaticana--Bibliography.
Codicology--Bibliography.
Manuscripts--History--Bibliography.
Manuscripts--Vatican City--Bibliography.
Harvard subject headings:
Biblioteca apostolica vaticana--Bibliography.
Codicology--Bibliography.
Manuscripts--Vatican City--Library resources--Bibliography.
Princeton subject headings:
Biblioteca apostolica vaticana--Catalogs.
Manuscripts--Vatican City--Bibliography--Catalogs.