APA (7th ed.) Citation

Apthorp, W. F. (1916). The opera, past and present: An historical sketch. C. Scribner's Sons.

Chicago Style (17th ed.) Citation

Apthorp, William Foster. The Opera, Past and Present: An Historical Sketch. New York: C. Scribner's Sons, 1916.

MLA (9th ed.) Citation

Apthorp, William Foster. The Opera, Past and Present: An Historical Sketch. C. Scribner's Sons, 1916.