Development of Rubita Media Based on QR Code with Strengthening the Character of Hard Work of Class IV Elementary School. JED (Jurnal Etika Demokrasi), [S. l.], v. 5, n. 2, p. 144–154, 2020. DOI: 10.26618/jed.v5i2.3118. Disponível em: https://journal.unismuh.ac.id/index.php/jed/article/view/3118. Acesso em: 27 aug. 2025.