ISBN 0-14-029312-4*Nicolaisen, Jay, "Italian Opera in Transition, 1871-1893", UMI Research Press, 1980 ISBN 0-8357-1121-8==External links==
ISBN 0-140-29312-4* Nicolaisen, Jay, "Italian Opera in Transition, 1871-1893", UMI Research Press, 1980 ISBN 0835711218