YUNIAR, A. N.; SULISTYOWATI; AFFINI, L. N. 110. Improving Writing Skills of Personal Letter Through Problem Based Learning (PBL) Strategies Using Cue Card. Prosiding Seminar Nasional Pendidikan Profesi Guru, [S. l.], v. 1, n. 1, p. 1001–1011, 2023. Disponível em: https://conference.upgris.ac.id/index.php/psnppg/article/view/4027. Acesso em: 19 feb. 2026.