Naugle, R. C., Montag, J. J., & Olson, J. C. (2014). History of Nebraska (Fourth edition.). University of Nebraska Press.

Naugle, Ronald C., John J. Montag, and James C. Olson. History of Nebraska. Fourth edition. Lincoln, NB: University of Nebraska Press, 2014.

Naugle, Ronald C., et al. History of Nebraska. Fourth edition. University of Nebraska Press, 2014.