APA
World Health Organization. Expanded Programme on Immunization, World Health Organization. Division of Nutrition, World Health Organization. Division of Diarrhoeal and Acute Respiratory Disease Control & WHO Programme for the Prevention of Blindness. (1994). Using immunization contacts as the gateway to eliminating vitamin_A deficiency : a policy document. Geneva: World Health Organization.
Chicago
World Health Organization. Expanded Programme on Immunization, World Health Organization. Division of Nutrition, World Health Organization. Division of Diarrhoeal and Acute Respiratory Disease Control and WHO Programme for the Prevention of Blindness. 1994. Using immunization contacts as the gateway to eliminating vitamin_A deficiency : a policy document. Geneva: World Health Organization.
Harvard
World Health Organization. Expanded Programme on Immunization, World Health Organization. Division of Nutrition, World Health Organization. Division of Diarrhoeal and Acute Respiratory Disease Control and WHO Programme for the Prevention of Blindness. (1994). Using immunization contacts as the gateway to eliminating vitamin_A deficiency : a policy document. Geneva: World Health Organization.
MLA
World Health Organization. Expanded Programme on Immunization, World Health Organization. Division of Nutrition, World Health Organization. Division of Diarrhoeal and Acute Respiratory Disease Control and WHO Programme for the Prevention of Blindness. Using immunization contacts as the gateway to eliminating vitamin_A deficiency : a policy document. Geneva: World Health Organization. 1994.