Self-Assessment - Therapy ya Chai?
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References
- Goldberg, D. P., & Williams, P. (1988). A User’s Guide to the General Health Questionnaire. Windsor, UK: NFER-Nelson.
- Snaith, R. P., Hamilton, M., Morley, S., Humayan, A., Hargreaves, D., & Trigwell, P. (1995). A scale for the assessment of hedonic tone: The Snaith-Hamilton Pleasure Scale. The British Journal of Psychiatry, 167(1), 99–103.