Não informado. (1955). Royal Society for the Promotion of Health Journal. Royal Society of Health.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Royal Society for the Promotion of Health Journal. London: Royal Society of Health, 1955.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Royal Society for the Promotion of Health Journal. Royal Society of Health, 1955.
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