REZEKI, I. S. THE EFFECTS OF LEARNING MATERIALS AND SELF-CONCEPT TOWARDS STUDENTS’ MASTERY ON PASSIVE VOICE. ENGLISH JOURNAL, [S. l.], v. 10, n. 2, 2016. DOI: 10.32832/english.v10i2.612. Disponível em: http://360665.5mvk4.group/index.php/ENGLISH/article/view/612. Acesso em: 21 feb. 2025.