APA (7th ed.) Citation

Krehbiel, H. E. (2003). A Second Book of Operas. Project Gutenberg.

Chicago Style (17th ed.) Citation

Krehbiel, Henry Edward. A Second Book of Operas. Project Gutenberg, 2003.

MLA (9th ed.) Citation

Krehbiel, Henry Edward. A Second Book of Operas. Project Gutenberg, 2003.

Warning: These citations may not always be 100% accurate.