Raditiyo Mirza Afiansyah 2023. Ondhâgga Bâsa, Levels of Speech in Madurese: Sociolinguistic Studies in Language Variations. Linguistik Terjemahan Sastra (LINGTERSA). 4, 2 (Aug. 2023), 62-68. DOI:https://doi.org/10.32734/lingtersa.v4i2.10765.