Orijinal: John W. Schaum Piano Course, E. The Violet Book. The Violet Book. E -- The Violet Book. The Globe Trotter.
Tercüme: John W. Schaum Piyano Kursu, E. Mor Kitap. John W. Schaum. Piyano Metodu notalar. Piano Solo notalar. John W. Schaum Piyano Kursu, E.