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, [S. l.], v. 4, n. 2, p. 152–163, 2017. DOI: 10.46244/geej.v4i2.748. Disponível em: https://ejournal.bbg.ac.id/index.php/geej/article/view/748. Acesso em: 3 aug. 2026.