Não informado. (1959). The choral journal. American Choral Directors Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. The Choral Journal. Lawton, Okla: American Choral Directors Association, 1959.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. The Choral Journal. American Choral Directors Association, 1959.
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