Mubarokah, Nia, DAN Wijayawati, Dyah. " SOCIAL PROBLEMS IN THE POEM "DI NEGERI AMPLOP" BY A. MUSTOFA BISRI (SEMIOTIC STUDY) RIFFATERRE" Prawara: Jurnal Pendidikan Bahasa dan Sastra Indonesia [Online], Volume 3 Nomor 2 (30 December 2022)