توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Southern Provinces, Nigeria. Education Dept, & Northern Provinces of Nigeria (Nigeria). Education Dept. Annual report on the Education Departments of Nigeria. Govt. Printer.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Southern Provinces, Nigeria. Education Dept, و Northern Provinces of Nigeria (Nigeria). Education Dept. Annual Report on the Education Departments of Nigeria. Lagos: Govt. Printer.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Southern Provinces, Nigeria. Education Dept, و Northern Provinces of Nigeria (Nigeria). Education Dept. Annual Report on the Education Departments of Nigeria. Govt. Printer.