APA-ийн эшлэл(7 дахь хэвлэлт)

Holzer, H., & Lincoln, A. (1998). The Lincoln mailbag: America writes to the President, 1861-1865. Southern Illinois University Press.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Holzer, Harold, ба Abraham Lincoln. The Lincoln Mailbag: America Writes to the President, 1861-1865. Carbondale, Ill.: Southern Illinois University Press, 1998.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Holzer, Harold, ба Abraham Lincoln. The Lincoln Mailbag: America Writes to the President, 1861-1865. Southern Illinois University Press, 1998.