Plaatjies, Bernadictus, and Anton Pretorius. “Clarifying Research Problems and Questions in Education: A Systematic Review of Definitions, Quality Criteria, Formulation Strategies and Frameworks”. Pedagogical Perspective, vol. 5, no. 1, Mar. 2026, pp. 57-81, https://doi.org/10.29329/pedper.2026.141.