Beethoven, L. v., Kerst, F., & Krehbiel, H. E. (2004). Beethoven, the Man and the Artist, as Revealed in His Own Words. Project Gutenberg.
Chicago Style (17th ed.) CitationBeethoven, Ludwig van, Friedrich Kerst, and Henry Edward Krehbiel. Beethoven, the Man and the Artist, as Revealed in His Own Words. Project Gutenberg, 2004.
MLA (9th ed.) CitationBeethoven, Ludwig van, et al. Beethoven, the Man and the Artist, as Revealed in His Own Words. Project Gutenberg, 2004.
Warning: These citations may not always be 100% accurate.