ebrary, Inc, Holzer, H., & Lincoln, A. (1998). The Lincoln mailbag: America writes to the President, 1861-1865. Southern Illinois University Press.
芝加哥风格引文ebrary, Inc, Harold Holzer, 与 Abraham Lincoln. The Lincoln Mailbag: America Writes to the President, 1861-1865. Carbondale, Ill.: Southern Illinois University Press, 1998.
MLA引文ebrary, Inc, et al. The Lincoln Mailbag: America Writes to the President, 1861-1865. Southern Illinois University Press, 1998.
警告：这些引文格式不一定是100％准确.