AGUSTINA, NURUSSYAADAH. “The Implementation of Portfolio Assessment Measuring Students’ Ability to Write Descriptive Text for Seventh Graders of Junior High School”. RETAIN : Journal of Research in English Language Teaching 6, no. 3 (December 21, 2018). Accessed May 5, 2024. https://ejournal.unesa.ac.id/index.php/retain/article/view/26365.