SYAFEI, M. BACKWASH EFFECTS OF PORTFOLIO ASSESSMENT IN ACADEMIC WRITING CLASSES1. TEFLIN Journal, [S. l.], v. 23, n. 2, p. 206–221, 2012. DOI: 10.15639/teflinjournal.v23i2/206-221. Disponível em: https://journal.teflin.org/index.php/journal/article/view/146. Acesso em: 21 nov. 2024.