Northern Region of Nigeria (Nigeria) & Northern Nigeria (Nigeria). Annual volumes of the laws of Northern Nigeria: Reformatted from the original and including, Annual volume of the laws of the Northern Region of Nigeria. Govt. Print.].
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Northern Region of Nigeria (Nigeria) و Northern Nigeria (Nigeria). Annual Volumes of the Laws of Northern Nigeria: Reformatted from the Original and Including, Annual Volume of the Laws of the Northern Region of Nigeria. [Kaduna, Nigeria: Govt. Print.].
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Northern Region of Nigeria (Nigeria) و Northern Nigeria (Nigeria). Annual Volumes of the Laws of Northern Nigeria: Reformatted from the Original and Including, Annual Volume of the Laws of the Northern Region of Nigeria. Govt. Print.].