Czerny, C. (1949). 160 short exercises Op.821. Augener.
Chicago-čujuhus (17. p.)Czerny, Carl. 160 Short Exercises Op.821. Londres: Augener, 1949.
MLA-čujuhus (9. p.)Czerny, Carl. 160 Short Exercises Op.821. Augener, 1949.
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