Não informado. (1930). Journal of School Health. American School Health Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Journal of School Health. Kent, Ohio: American School Health Association, 1930.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Journal of School Health. American School Health Association, 1930.
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