Walker, D., & Lang, P. (2007). The maverick and the machine: Governor Dan Walker tells his story. Southern Illinois University Press.
Citace podle Chicago (17th ed.)Walker, Daniel, a Peggy Lang. The Maverick and the Machine: Governor Dan Walker Tells His Story. Carbondale: Southern Illinois University Press, 2007.
Citace podle MLA (9th ed.)Walker, Daniel, a Peggy Lang. The Maverick and the Machine: Governor Dan Walker Tells His Story. Southern Illinois University Press, 2007.
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