RIKA AFRIANA; TRI YULIAWAN. Analysis of Language Errors at the Morphological Level in Students’ Papers at the Islamic University of Riau . RETORIKA: Jurnal Ilmu Bahasa, [S. l.], v. 10, n. 2, p. 440–454, 2024. DOI: 10.22225/jr.10.2.2024.440-454. Disponível em: https://www.ejournal.warmadewa.ac.id/index.php/jret/article/view/9745. Acesso em: 16 jan. 2026.