Gradel, T. J., Simpson, D. W., & Edgar, J. (2015). Corrupt Illinois: Patronage, cronyism, and criminality. University of Illinois Press.
Chicago-čujuhus (17. p.)Gradel, Thomas J., Dick W. Simpson, juo Jim Edgar. Corrupt Illinois: Patronage, Cronyism, and Criminality. Urbana, Illinois: University of Illinois Press, 2015.
MLA-čujuhus (9. p.)Gradel, Thomas J., et al. Corrupt Illinois: Patronage, Cronyism, and Criminality. University of Illinois Press, 2015.
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