Gaya APA

Blind, I, A, F, F, T. (1974). Vitamin A Deficiency & Blindness Prevention . Newyork, USA: American Foundation For The Blind.

Gaya MLA

Blind, Internasional., American, Foundation, For, The. "Vitamin A Deficiency & Blindness Prevention". Newyork, USA: American Foundation For The Blind, 1974. Lawas.