Lincoln Museum (Fort Wayne, Ind.), ebrary, Inc, Holzer, H., & Gabbard, S. V. (2007). Lincoln and freedom: Slavery, emancipation, and the Thirteenth Amendment. Southern Illinois University Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Lincoln Museum (Fort Wayne, Ind.), Inc ebrary, Harold Holzer, و Sara Vaughn Gabbard. Lincoln and Freedom: Slavery, Emancipation, and the Thirteenth Amendment. Carbondale: Southern Illinois University Press, 2007.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Lincoln Museum (Fort Wayne, Ind.), et al. Lincoln and Freedom: Slavery, Emancipation, and the Thirteenth Amendment. Southern Illinois University Press, 2007.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.