Tolong jelaskan mengenai Retrieved on 2009-05-08 dari Clement Vallandigham

Eugene H. Roseboom. "Southern Ohio and the Union in 1863," Mississippi Valley Historical Review (1952) 39#1 pp. 29–44 in JSTOR

Vallandigham, James L. A Life of Clement L. Vallandigham. Baltimore: Turnbull Brothers, 1872.