K.M.KUMAR; SUDHA RAMAIAH. Pharmacological Importance Of Echinacea Purpurea. International Journal of Pharma and Bio Sciences, [S. l.], v. 2, n. 4, p. 304–314, 2011. Disponível em: https://ijpbs.net/index.php/journal/article/view/1025. Acesso em: 3 sep. 2026.