Hidayat, Noval Nur (2023) PENGARUH FAKTOR LINGKUNGAN SOSIAL TERHADAP KESANTUNAN BERBAHASA BAGI SISWA DI SEKOLAH MENENGAH PERTAMA: STUDI KASUS DI SMPN 75 DAN 249 JAKARTA = THE INFLUENCE OF SOCIAL ENVIRONMENTAL FACTORS ON LANGUAGE PROPERTY FOR STUDENTS IN JUNIOR HIGH SCHOOL: A CASE STUDY AT SMPN 75 AND 249 JAKARTA. Thesis thesis, Universitas Hasanuddin.