Unknown. American Lyric Tenor and Composer Roland Hayes Visiting Xavier University of Louisiana.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUnknown. American Lyric Tenor and Composer Roland Hayes Visiting Xavier University of Louisiana.
एमएलए (8वां संस्करण) प्रशस्ति पत्रUnknown. American Lyric Tenor and Composer Roland Hayes Visiting Xavier University of Louisiana.
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