Isolation and Study of Dry Extract from Echinacea Purpurea. Global Journal of Medical Research, [S. l.], v. 22, n. B1, p. 31–35, 2022. Disponível em: https://medicalresearchjournal.org/index.php/GJMR/article/view/2652. Acesso em: 13 aug. 2026.