ماخذ: Piano Mastery. Talks with Paderewski, Hofmann and Others composed by Harriette Brower. Piano Solo sheet music. Piano Mastery.
ترجمه: تسلط پیانو. Talks with Paderewski, Hofmann and Others. نت پیانو. تسلط پیانو. Edited by Jeffrey Johnson. برای پیانو. شاهکارهای.