Kopper, B. A., Osman, A., Osman, J. R., & Hoffman, J. (1998). Clinical utility of the MMPI-A content scales and Harris-Lingoes subscales in the assessment of suicidal risk factors in psychiatric adolescents. Journal of Clinical Psychology, 54(2), 191–200. John Wiley \& Sons Inc, US,  http://www.wiley.com