APA (7th ed.) Citation

Wagner, R., Liszt, F., & Hueffer, F. (2003). Correspondence of Wagner and Liszt - Volume 2. Project Gutenberg.

Chicago Style (17th ed.) Citation

Wagner, Richard, Franz Liszt, and Francis Hueffer. Correspondence of Wagner and Liszt - Volume 2. Project Gutenberg, 2003.

MLA (9th ed.) Citation

Wagner, Richard, et al. Correspondence of Wagner and Liszt - Volume 2. Project Gutenberg, 2003.

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