Every type of library will inevitably have problem patrons, but this article focuses
mainly on public and academic libraries. As the times have changed, so has the magnitude of the problem patrons. Problems of the past seem irrelevant compared to some of the problems we are currently facing. Discussed in this article are particular types of problem behavior, including, but not limited to anger, harassment of staff, and homelessness. The types of each category include examples to illustrate each concern, and possible remedies.
Blessinger, Kelly D., "Problem Patrons: All Shapes and Sizes" (2002). Faculty Publications. 25.