Osborne, pp. 208–09 Sadie, pp. 415 According to Osborne, pp. 207 The soprano mezzo singers include the two servant-girls, either two sopranos or one soprano and one mezzo, who sing the duet "Amanti, costanti" in the Act III Finale.
Truy cập ngày 16 tháng 7 năm 2008.  ^ According to Osborne, pp. 207 ^ The soprano mezzo singers include the two servant-girls, either two sopranos or one soprano and one mezzo, who sing the duet "Amanti, costanti" in the Act III Finale.