Tera Athena. “Academic Writing Class’ Perceptions of Portfolios Assessment”. SELL (Scope of English Language Teaching, Linguistics, and Literature) Journal 1, no. 1 (October 13, 2020): 33–38. Accessed May 17, 2025. https://www.publikasi.stkippgri-bkl.ac.id/index.php/SL/article/view/495.