Nigeria. Federal Ministry of Health. Annual report of the Federal Ministry of Health. Federal Ministry of Information, Printing Division.
Chicago-referens (17:e uppl.)Nigeria. Federal Ministry of Health. Annual Report of the Federal Ministry of Health. Lagos: Federal Ministry of Information, Printing Division.
MLA-referens (8:e uppl.)Nigeria. Federal Ministry of Health. Annual Report of the Federal Ministry of Health. Federal Ministry of Information, Printing Division.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.