Ingram, M. D. (1959). Organizing and directing children choirs. Abingdon Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रIngram, Madelina D. Organizing and Directing Children Choirs. New York: Abingdon Press, 1959.
एमएलए (9वां संस्करण) प्रशस्ति पत्रIngram, Madelina D. Organizing and Directing Children Choirs. Abingdon Press, 1959.
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