Skornicka, J. E. (1938). Rubank intermediate method: Saxophone. A follow up course for individual or like instrument class instruction. Rubank.
Lua i Stíl Chicago (17ú heag.)Skornicka, Joseph E. Rubank Intermediate Method: Saxophone. A Follow Up Course for Individual or like Instrument Class Instruction. Chicago: Rubank, 1938.
Lua MLA (9ú heag.)Skornicka, Joseph E. Rubank Intermediate Method: Saxophone. A Follow Up Course for Individual or like Instrument Class Instruction. Rubank, 1938.
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