Davis, W. C. (2014). Crucible of command: Ulysses S. Grant and Robert E. Lee -- the war they fought, the peace they forged. Da Capo Press, a Member of the Perseus Books Group.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Davis, William C. Crucible of Command: Ulysses S. Grant and Robert E. Lee -- the War They Fought, the Peace They Forged. Boston, MA: Da Capo Press, a Member of the Perseus Books Group, 2014.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Davis, William C. Crucible of Command: Ulysses S. Grant and Robert E. Lee -- the War They Fought, the Peace They Forged. Da Capo Press, a Member of the Perseus Books Group, 2014.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.