DATTA, Lois-ellin. Why an Active Control Group Makes a Difference and What to Do About It. Journal of MultiDisciplinary Evaluation, Kalamazoo, MI, USA, v. 4, n. 7, p. 1–12, 2007. DOI: 10.56645/jmde.v4i7.5. Disponível em: https://jmde.journals.publicknowledgeproject.org/index.php/jmde_1/article/view/5. Acesso em: 4 may. 2026.