Pop-Up Book–Based Psychoeducation Improves Self-Esteem and Strengthens Bullying Prevention Among Elementary School Children. JKG (JURNAL KEPERAWATAN GLOBAL), [S. l.], v. 11, n. 1, p. 83–94, 2026. DOI: 10.37341/jkg.v11i1.1391. Disponível em: https://jurnalkeperawatanglobal.com/index.php/jkg/article/view/1391. Acesso em: 12 jun. 2026.