APA-ийн эшлэл(7 дахь хэвлэлт)

Walker, D., & Lang, P. (2007). The maverick and the machine: Governor Dan Walker tells his story. Southern Illinois University Press.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Walker, Daniel, ба Peggy Lang. The Maverick and the Machine: Governor Dan Walker Tells His Story. Carbondale: Southern Illinois University Press, 2007.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Walker, Daniel, ба Peggy Lang. The Maverick and the Machine: Governor Dan Walker Tells His Story. Southern Illinois University Press, 2007.