1. Addington, L. A. (2009). Cops and cameras: Public school security as a policy response to Columbine. American Behavioral Scientist, 52(10), 1426–1446. https://doi.org/10.1177/0002764209332556 .
2. Ahern, J. F. (1972). Police in trouble: Our frightening crisis in law enforcement. New York: Hawthorne Books.
3. Beger, R. R. (2002). Expansion of police power in public schools and the vanishing rights of students. Social Justice, 29(1/2), 119–130.
4. Beger, R. R. (2003). The ‘worst of both worlds’: School security and the disappearing fourth amendment rights of students. Criminal Justice Review, 28(2), 336–354. https://doi.org/10.1177/073401680302800208 .
5. Bittner, E. (1970). The functions of the police in modern society: A review of background factors, current practices, and possible role models. Chevy Chase: National Institute of Mental Health. Retrieved from: https://www.ncjrs.gov/pdffiles1/Digitization/147822NCJRS.pdf