Umara, U. 2018. THE EFFECT OF AUTHENTIC MATERIALS ON STUDENTS’ LISTENING PROCEDURAL TEXT ABILITY OF THE 2018/2019 NINTH YEAR STUDENTS AT SMP SWASTA DEWANTARA PUTRA SEBERTUNG. Serunai : Jurnal Ilmiah Ilmu Pendidikan. 3, 2 (Nov. 2018), 86–95. DOI:https://doi.org/10.37755/sjip.v3i2.34.