Não informado. (1940). Mental health. National Association for Mental Health.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Mental Health. London: National Association for Mental Health, 1940.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Mental Health. National Association for Mental Health, 1940.
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