Izvornik: Expressive Etudes, Book Six. Heller. Suzanne Guy. Piano Method sheet music. Piano Solo sheet music. Advanced. Performance.
Prijevod: Izražajna etide, knjige Šest. Klavir Metoda note. Piano Solo note. Napredan. Izražajan Etudes, Book Šest skladao Suzanne Guy. . Performanse.