TAGONNA E. SIBURIAN; ELY DJULIA; WIDYA ARWITA. Development of a Non-Textbook on Biodiversity in Sumatra Based on the Sustainable Development Goals to Improve Critical Thinking and Problem-Solving Skills. Jurnal Perspektif, [S. l.], v. 10, n. 1, p. 137–151, 2026. DOI: 10.15575/jp.v10i1.446. Disponível em: https://perspektif.uinsgd.ac.id/index.php/JP/article/view/446. Acesso em: 3 mar. 2026.