Martin, G. W. (1999). Twentieth century opera: A guide (1st Limelight ed.). Limelight Editions.
Chicago Style (17th ed.) CitationMartin, George Whitney. Twentieth Century Opera: A Guide. 1st Limelight ed. New York: Limelight Editions, 1999.
MLA (8th ed.) CitationMartin, George Whitney. Twentieth Century Opera: A Guide. 1st Limelight ed. Limelight Editions, 1999.
Warning: These citations may not always be 100% accurate.