(2009). Nicolai Podgornov's Graded Pieces for Piano: Nicolai Podgornov. Universal Ed..
Chicago-Zitierstil (17. Ausg.)Nicolai Podgornov's Graded Pieces for Piano: Nicolai Podgornov. Vienna [u.a.]: Universal Ed., 2009.
MLA-Zitierstil (8. Ausg.)Nicolai Podgornov's Graded Pieces for Piano: Nicolai Podgornov. Universal Ed., 2009.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.