Emerson. The Dark Days of Abraham Lincoln’s Widow, as Revealed by Her Own Letters. Southern Illinois University Press.
芝加哥风格引文Emerson. The Dark Days of Abraham Lincoln’s Widow, as Revealed by Her Own Letters. Southern Illinois University Press.
MLA引文Emerson. The Dark Days of Abraham Lincoln’s Widow, as Revealed by Her Own Letters. Southern Illinois University Press.
警告：这些引文格式不一定是100％准确.