1. Abbott, M. W., & Volberg, R. A. (1999). Gambling and problem gambling in the community: An international overview and critique, Report No. 1 of the New Zealand Gaming Survey. Wellington, NZ: Department of Internal Affairs.
2. American Psychiatric Association. (1980). Diagnostic and statistical manual of mental disorders (3rd ed.). Washington, DC: American Psychiatric Association.
3. American Psychiatric Association. (1994). Diagnostic and statistical manual of mental disorders (4th ed.). Washington, DC: American Psychiatric Association.
4. Bakken, I. J., Götestam, K. G., Gråwe, R. W., Wenzel, H. G., & Oren, A. (2009). Gambling behavior and gambling problems in Norway 2007. Scandinavian Journal of Psychology, March 9, 2009 (epub ahead of print, PMID: 19298249; accessed June 30, 2009).
5. Bush, K., Kivlahan, D. R., McDonnell, M. B., Fihn, S. D., & Bradley, K. A. (1998). The AUDIT alcohol consumption questions (AUDIT-C): An effective brief screening test for problem drinking. Archives of Internal Medicine, 158(16), 1789–1795.