1. ASHA. (2006). Evidence-based practice. Retrieved October 26 2006 from www.asha.org/members/ebp/
2. Prologue: Developing evidence-based practices and research collaborations in school settings.;Apel K.;Language, Speech and Hearing Services in Schools,2001
3. Epilogue: Developing evidence-based practices and research collaborations in school settings.;Apel K.;Language, Speech and Hearing Services in Schools,2001
4. Overview, definitions, and goals for ASHA’s treatment outcomes and clinical trials activities (What difference do outcome data make to you?).;Baum H. M.;Language, Speech and Hearing Services in Schools,1998
5. Centre for Reviews and Disseminations University of York UK. (2001). Undertaking systematic reviews of research on effectiveness. CRD’s guidance for those carrying out or commissioning reviews (CRD Report No. 4 2nd ed.). Retrieved November 16 2006 from www.york.ac.uk/inst/crd/report4.htm