Original: Mathews, William Smythe Babcock. Standard Graded Course of Studies for the Pianoforte. Volume 8. Piano solo. Volume 1.
Traducció: Mathews, Guillermo Smythe Babcock. Volum 8. Mathews, Guillermo Smythe Babcock. Piano sol. Volume 2. Volume 3. Volum 4. Volum 5.