(2007). Abraham Lincoln: The observations of John G. Nicolay and John Hay. Southern Illinois University Press.
Chicago Style (17th ed.) CitationAbraham Lincoln: The Observations of John G. Nicolay and John Hay. Carbondale: Southern Illinois University Press, 2007.
MLA (9th ed.) CitationAbraham Lincoln: The Observations of John G. Nicolay and John Hay. Southern Illinois University Press, 2007.
Warning: These citations may not always be 100% accurate.