Charles A. Dana Foundation, Helen Keller International, & West, K. P. (1993). Bellagio meeting on vitamin A deficiency % childhood mortality: Proceedings of "Public health significance of vitamin A deficiency and its control," Bellagio Study and Conference Center of the Rockefeller Foundation, February 3-7, 1992. Helen Keller International.
Παραπομπή σε μορφή Chicago (17η εκδ.)Charles A. Dana Foundation, Helen Keller International, και Keith P. West. Bellagio Meeting on Vitamin A Deficiency % Childhood Mortality: Proceedings of "Public Health Significance of Vitamin A Deficiency and Its Control," Bellagio Study and Conference Center of the Rockefeller Foundation, February 3-7, 1992. New York: Helen Keller International, 1993.
Παραπομπή σε μορφή MLA (9th εκδ.)Charles A. Dana Foundation, et al. Bellagio Meeting on Vitamin A Deficiency % Childhood Mortality: Proceedings of "Public Health Significance of Vitamin A Deficiency and Its Control," Bellagio Study and Conference Center of the Rockefeller Foundation, February 3-7, 1992. Helen Keller International, 1993.