1. Azen, S. P., Snibbe, H. M., & Montgomery, H. R. (1973). A longitudinal predictive study of success and performance of law enforcement officers.Journal of Applied Psychology, 57(2), 190–192.
2. Blum, R. H. (Ed.) (1964).Police Selection. Springfield, IL: Charles C. Thomas.
3. Clemans, W. V. (1958). An index of item criterion relationship.Educational and psychological Measurement, 18, 167–172.
4. Hargrave, G. E. & Hiatt, D. (1987). Law enforcement selection with the interview, MMPI, and CPI: A study of reliability and validity.Journal of Police Science and Administration, 15(2), 110–113.
5. Hargrave, G. E., Hiatt, D. & Gaffney, T. W. (1986). A comparison of MMPI and CPI test profiles for traffic officers and deputy sheriffs.Journal of Police Science and Administration, 14(3), 250–253.