APA (7th ed.) Citation

Krehbiel, H. E. (1917). A second book of operas: Their histories, their plots, and their music. Macmillan.

Chicago Style (17th ed.) Citation

Krehbiel, Henry Edward. A Second Book of Operas: Their Histories, Their Plots, and Their Music. New York: Macmillan, 1917.

MLA (9th ed.) Citation

Krehbiel, Henry Edward. A Second Book of Operas: Their Histories, Their Plots, and Their Music. Macmillan, 1917.