Zuluaga, O. H., N. Ramírez, B. Arango, H. J. Aricapa, and D. Cardona. “Subchronic Toxicity of Spilanthes Americano in Swiss Albino Mice”. Biosalud, vol. 7, Dec. 2008, pp. 41-45, https://revistasojs.ucaldas.edu.co/index.php/biosalud/article/view/5829.