* Budden, Julian, "Puccini: His Life and Works", Oxford University Press, 2002 ISBN 978-0-19-816468-5*Carner, Mosco, "Puccini: A Critical Biography", Alfred Knopf, 1959.
* Budden, Julian, "Puccini: His Life and Works", Oxford University Press, 2002 ISBN 978-0-19-816468-5* Carner, Mosco, "Puccini: A Critical Biography", Alfred Knopf, 1959.