Zuhri Efendi. “IMPROVING STUDENTS’ ABILITY IN WRITING ENGLISH TEACHING BY USING PORTFOLIO ASSESSMENT : (An Experimental Study at SMKN 1 Blang Pidie)”. Getsempena English Education Journal 4, no. 2 (November 30, 2017): 152–163. Accessed August 3, 2026. https://ejournal.bbg.ac.id/index.php/geej/article/view/748.