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2. Empowerment and participation in youth work Fitzsimons, Annette. Exeter, England : Learning Matters, 2011. SW310
4. Single-case research designs: methods for clinical and applied settings Kazdin, Alan E. New York ; Oxford University Press, 2011. CP607
5. The evidence-based parenting practitioner's handbook Asmussen, Kirsten. Abingdon, Oxon : Routledge, 2011. SW330