Twiss, T. (1846). Oregon question examined, in respect to facts and the law of nations. Longman, Brown, Green, and Longmans.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Twiss, Travers. Oregon Question Examined, in Respect to Facts and the Law of Nations. London: Longman, Brown, Green, and Longmans, 1846.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Twiss, Travers. Oregon Question Examined, in Respect to Facts and the Law of Nations. Longman, Brown, Green, and Longmans, 1846.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.