Curtis, G. W. (1856). The duty of the American scholar to politics and the times: An oration, delivered on Tuesday, August 5, 1856, before the literary societies of Wesleyan University, Middletown, Conn. Dix, Edwards.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Curtis, George William. The Duty of the American Scholar to Politics and the Times: An Oration, Delivered on Tuesday, August 5, 1856, Before the Literary Societies of Wesleyan University, Middletown, Conn. New York: Dix, Edwards, 1856.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Curtis, George William. The Duty of the American Scholar to Politics and the Times: An Oration, Delivered on Tuesday, August 5, 1856, Before the Literary Societies of Wesleyan University, Middletown, Conn. Dix, Edwards, 1856.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.