APA-viite (7. p.)
Gradel, T. J., Simpson, D. W., & Edgar, J. (2015). Corrupt Illinois: Patronage, cronyism, and criminality. University of Illinois Press.
Chicago-viite (17. p.)
Gradel, Thomas J., Dick W. Simpson, ja Jim Edgar. Corrupt Illinois: Patronage, Cronyism, and Criminality. Urbana, Illinois: University of Illinois Press, 2015.
MLA-viite (9. p.)
Gradel, Thomas J., et al. Corrupt Illinois: Patronage, Cronyism, and Criminality. University of Illinois Press, 2015.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.