Southern Provinces, Nigeria. Education Dept, & Northern Provinces of Nigeria (Nigeria). Education Dept. Annual report on the Education Departments of Nigeria. Govt. Printer.
Chicago-referens (17:e uppl.)Southern Provinces, Nigeria. Education Dept, och Northern Provinces of Nigeria (Nigeria). Education Dept. Annual Report on the Education Departments of Nigeria. Lagos: Govt. Printer.
MLA-referens (8:e uppl.)Southern Provinces, Nigeria. Education Dept, och Northern Provinces of Nigeria (Nigeria). Education Dept. Annual Report on the Education Departments of Nigeria. Govt. Printer.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.