APA-viite (7. p.)
ebrary, Inc, Holzer, H., & Lincoln, A. (1998). The Lincoln mailbag: America writes to the President, 1861-1865. Southern Illinois University Press.
Chicago-viite (17. p.)
ebrary, Inc, Harold Holzer, ja Abraham Lincoln. The Lincoln Mailbag: America Writes to the President, 1861-1865. Carbondale, Ill.: Southern Illinois University Press, 1998.
MLA-viite (9. p.)
ebrary, Inc, et al. The Lincoln Mailbag: America Writes to the President, 1861-1865. Southern Illinois University Press, 1998.
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