Koraneekij, Prakob, and Jintavee Khlaisang. “Students’ Beliefs Regarding the Use of E-Portfolio to Enhance Cognitive Skills in a Blended Learning Environment”. International Journal of Emerging Technologies in Learning (iJET), vol. 14, no. 02, Jan. 2019, pp. pp. 85-104, doi:10.3991/ijet.v14i02.8288.