Babaee, Soodeh, and Hamideh Vahidi Borji. “The Role of Problem-Based Learning (PBL) E-Portfolios on Writing Anxiety”. International Journal of Sciences: Basic and Applied Research (IJSBAR) 36, no. 1 (September 21, 2017): 279–305. Accessed May 5, 2024. https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/7976.