Keen, F. N. (1923). Towards international justice: Being a collection of essays and papers on international organisation and the League of nations. Harcourt, Brace & company.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Keen, F. N. Towards International Justice: Being a Collection of Essays and Papers on International Organisation and the League of Nations. New York: Harcourt, Brace & company, 1923.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Keen, F. N. Towards International Justice: Being a Collection of Essays and Papers on International Organisation and the League of Nations. Harcourt, Brace & company, 1923.
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