PURWANTO, M. B.; UMAR; AL FIRDAUS, M. M. Analysis of Students’ Learning Motivation: Psychometric Parameters Study of Learning English Courses in the Business Travel Department. Metathesis: Journal of English Language, Literature, and Teaching, Magelang, Indonesia, v. 7, n. 1, p. 86–96, 2023. DOI: 10.31002/metathesis.v7i1.414. Disponível em: https://journal.untidar.ac.id/index.php/metathesis/article/view/414. Acesso em: 3 jul. 2024.