LIDYA AYU PERMATASARI; KALUKAR, V.; WARDANI, I. An Analysis of Grammatical Errors in Writing Thesis Proposal of English Department Students in Mulawarman University in the Academic Year 2018/2019. E3L: Journal of English Teaching, Linguistic, and Literature , [S. l.], v. 2, n. 2, p. 60–64, 2019. DOI: 10.30872/e3l.v2i2.1994. Disponível em: https://jurnal.fkip.unmul.ac.id/index.php/e3l/article/view/1994. Acesso em: 16 apr. 2025.