ebrary, Inc, Burlingame, M., Hay, J., & Nicolay, J. G. (2007). Abraham Lincoln: The observations of John G. Nicolay and John Hay. Southern Illinois University Press.
Цитирование в стиле Чикаго (17-е изд.)ebrary, Inc, Michael Burlingame, John Hay, и John G. Nicolay. Abraham Lincoln: The Observations of John G. Nicolay and John Hay. Carbondale: Southern Illinois University Press, 2007.
Цитирование MLA (9-е изд.)ebrary, Inc, et al. Abraham Lincoln: The Observations of John G. Nicolay and John Hay. Southern Illinois University Press, 2007.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.