• Diaz, Arlene and Leah Shopkow, “A Tale of Two Thresholds,” Practice and Evidence of the Scholarship of Teaching and Learning in Higher Education,  Vol. 12, No. 2 (2017)
  • Higgs, Bettie and James Cronin, “Threshold Concepts: Informing the Curriculum,” in Ciara O’Farrell and Alison Farrell, eds., Emerging Issues in Higher Education III: From Capacity Building to Sustainability. Athlone: 2013), pp. 166-177.