Ludwig Van Beethoven, John Trie (2017). “Ludwig Van Beethoven for Classical Guitar - Tablature: Arranged for Guitar by John Trie”, p.36, BoD - Books on Demand
Ludwig van Beethoven, Friedrich Kerst, Henry Edward Krehbiel (1964). “Beethoven, the Man and the Artist, as Revealed in His Own Words”, p.13, Courier Corporation