Raph, A. (1969). The Double Valve Bass Trombone: A method for trombone with single valve in F ; double valve in Eb ; double valve in D / by Alan Raph. Fischer.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিRaph, Alan. The Double Valve Bass Trombone: A Method for Trombone with Single Valve in F ; Double Valve in Eb ; Double Valve in D / by Alan Raph. New York, NY [u.a.]: Fischer, 1969.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিRaph, Alan. The Double Valve Bass Trombone: A Method for Trombone with Single Valve in F ; Double Valve in Eb ; Double Valve in D / by Alan Raph. Fischer, 1969.
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