SETIAWAN, Ari; PUSPORINI, Widowati; DARDJITO, Hanandyo. Observation instrument for student social attitude in primary schools: Validity and reliability. Jurnal Penelitian dan Evaluasi Pendidikan, [S. l.], v. 24, n. 1, p. 76–87, 2020. DOI: 10.21831/pep.v24i1.31868. Disponível em: https://journal.uny.ac.id/index.php/jpep/article/view/31868. Acesso em: 17 may. 2025.