APA
Alfred Sommer, . (1982). Nutritional blindness : xerophthalmia and keratommalacia. New york: Oxford University Press.
Chicago
Alfred Sommer, . 1982. Nutritional blindness : xerophthalmia and keratommalacia. New york: Oxford University Press.
Harvard
Alfred Sommer, . (1982). Nutritional blindness : xerophthalmia and keratommalacia. New york: Oxford University Press.
MLA
Alfred Sommer, . Nutritional blindness : xerophthalmia and keratommalacia. New york: Oxford University Press. 1982.
