CHOPIN · POLONAISE · A-FLAT MAJOR · OP.53
- Fryderyk Chopin Institute / Chopin Competition: Polonaise in A flat major
- Fryderyk Chopin Institute: Fryderyk Chopin biography
- University of Chicago, Chopin Early Editions: Opus 53 catalogue
- The Morgan Library & Museum: autograph manuscript, Op.53
- University of Southern California, Polish Music Center: Polonaise