APA (7th ed.) Citation

Krehbiel, H. E. (1891). Studies in the Wagnerian drama. Harper & brothers.

Chicago Style (17th ed.) Citation

Krehbiel, Henry Edward. Studies in the Wagnerian Drama. New York: Harper & brothers, 1891.

MLA (9th ed.) Citation

Krehbiel, Henry Edward. Studies in the Wagnerian Drama. Harper & brothers, 1891.