Sommer, A. (1995). Vitamin A deficiency and its consequences: A field guide to detection and control (3rd ed.). World Health Organization.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSommer, Alfred. Vitamin A Deficiency and Its Consequences: A Field Guide to Detection and Control. 3rd ed. Geneva: World Health Organization, 1995.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSommer, Alfred. Vitamin A Deficiency and Its Consequences: A Field Guide to Detection and Control. 3rd ed. World Health Organization, 1995.
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