Effectiveness of sulfuric acid and hydrochloric acid catalysts in the esterification of frankincense cinnamic acid with ethanol and methanol. Jurnal Pendidikan Kimia, [S. l.], v. 16, n. 1, p. 50–56, 2024. DOI: 10.24114/jpkim.v16i1.53231. Disponível em: https://jurnal.unimed.ac.id/2012/index.php/jpk/article/view/53231. Acesso em: 22 apr. 2026.