»Reports, 1954«. Journal of the American Musicological Society. Zv. 8, št. 2. University of California Press on behalf of the American Musicological Society. 1955. str. 153. ISSN0003-0139. Pridobljeno 9. junija 2012.
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»Reports, 1954«. Journal of the American Musicological Society. Zv. 8, št. 2. University of California Press on behalf of the American Musicological Society. 1955. str. 153. ISSN0003-0139. Pridobljeno 9. junija 2012.