Winkle, K. J. (2011). Abraham and Mary Lincoln. Southern Illinois University Press.
芝加哥风格引文Winkle, Kenneth J. Abraham and Mary Lincoln. Carbondale: Southern Illinois University Press, 2011.
MLA引文Winkle, Kenneth J. Abraham and Mary Lincoln. Southern Illinois University Press, 2011.
警告：这些引文格式不一定是100％准确.