Kholidi, Muhammad Azhar, et al. “Students’ Perspective of Open Book Versus Closed Book Examinations in Higher Education Institutions During COVID-19 Pandemic in Indonesia ”. Asian Journal of Assessment in Teaching and Learning, vol. 13, no. 1, Apr. 2023, pp. 15-23, https://doi.org/10.37134/ajatel.vol13.1.2.2023.