Southern Provinces, Nigeria. Education Dept, & Northern Provinces of Nigeria (Nigeria). Education Dept. Annual report on the Education Departments of Nigeria. Govt. Printer.
Čikaški stil citiranja (17. izdanje)Southern Provinces, Nigeria. Education Dept, i Northern Provinces of Nigeria (Nigeria). Education Dept. Annual Report on the Education Departments of Nigeria. Lagos: Govt. Printer.
MLA način citiranja (8. izdanje)Southern Provinces, Nigeria. Education Dept, i Northern Provinces of Nigeria (Nigeria). Education Dept. Annual Report on the Education Departments of Nigeria. Govt. Printer.
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