APA
UNICEF and the World Health Organization, UNICEF, . (2008). Immunization summary 2008 : a statistical reference containing data through. New York: United Nations International Children's Emergency Fund (UNICEF).
Chicago
UNICEF and the World Health Organization, UNICEF, . 2008. Immunization summary 2008 : a statistical reference containing data through. New York: United Nations International Children's Emergency Fund (UNICEF).
Harvard
UNICEF and the World Health Organization, UNICEF, . (2008). Immunization summary 2008 : a statistical reference containing data through. New York: United Nations International Children's Emergency Fund (UNICEF).
MLA
UNICEF and the World Health Organization, UNICEF, . Immunization summary 2008 : a statistical reference containing data through. New York: United Nations International Children's Emergency Fund (UNICEF). 2008.