APA
Eastman S. J., . (1987). Vitamin A deficiency and xerophthalmia : recent findings and some programme implications. UNICEF, New York: .
Chicago
Eastman Susan J, . 1987. Vitamin A deficiency and xerophthalmia : recent findings and some programme implications. UNICEF, New York: .
Harvard
Eastman S. J., . (1987). Vitamin A deficiency and xerophthalmia : recent findings and some programme implications. UNICEF, New York: .
MLA
Eastman Susan J, . Vitamin A deficiency and xerophthalmia : recent findings and some programme implications. UNICEF, New York: . 1987.