APA
World Health Organization, . (1986). Prevention and control of yellow fever in Africa. Geneva: World Health Organization.
Chicago
World Health Organization, . 1986. Prevention and control of yellow fever in Africa. Geneva: World Health Organization.
Harvard
World Health Organization, . (1986). Prevention and control of yellow fever in Africa. Geneva: World Health Organization.
MLA
World Health Organization, . Prevention and control of yellow fever in Africa. Geneva: World Health Organization. 1986.