Great Britain. Office of Commonwealth Relations & Great Britain. Parliament. (1960). Federation of Nigeria: International rights and obligations : exchange of letters between the government of the United Kingdom and the government of the Federation of Nigeria. H.M.S.O..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Great Britain. Office of Commonwealth Relations و Great Britain. Parliament. Federation of Nigeria: International Rights and Obligations : Exchange of Letters Between the Government of the United Kingdom and the Government of the Federation of Nigeria. London: H.M.S.O., 1960.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Great Britain. Office of Commonwealth Relations و Great Britain. Parliament. Federation of Nigeria: International Rights and Obligations : Exchange of Letters Between the Government of the United Kingdom and the Government of the Federation of Nigeria. H.M.S.O., 1960.