Ward, S. D. (1942). Rubank intermediate method: Cello, ; a follow up course for individual or like-instrument class instruction. Rubank.
Cita Chicago (17th ed.)Ward, Sylvan D. Rubank Intermediate Method: Cello, ; a Follow Up Course for Individual or Like-instrument Class Instruction. Chicago: Rubank, 1942.
Cita MLA (9th ed.)Ward, Sylvan D. Rubank Intermediate Method: Cello, ; a Follow Up Course for Individual or Like-instrument Class Instruction. Rubank, 1942.
Atenció: Aquestes cites poden no estar 100% correctes.