Wells, K., & Littell, J. H. Study quality assessment in systematic reviews of research on intervention effects.
استشهاد بنمط شيكاغوWells, Kathleen., و Julia H. Littell. Study Quality Assessment in Systematic Reviews of Research On Intervention Effects.
MLA استشهادWells, Kathleen., و Julia H. Littell. Study Quality Assessment in Systematic Reviews of Research On Intervention Effects.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.