Hennig, A., Foster, A., Shrestha, S. P., & Pokhrel, R. P. (1991). Vitamin A deficiency and corneal ulceration in south-east Nepal: Implications for preventing blindness in children. World Health Organization.
Chicago-tyylinen lähdeviittausHennig, A., A. Foster, S. P. Shrestha, ja R. P. Pokhrel. Vitamin A Deficiency and Corneal Ulceration in South-east Nepal: Implications for Preventing Blindness in Children. World Health Organization, 1991.
MLA-viiteHennig, A., A. Foster, S. P. Shrestha, ja R. P. Pokhrel. Vitamin A Deficiency and Corneal Ulceration in South-east Nepal: Implications for Preventing Blindness in Children. World Health Organization, 1991.
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