Herrera, Frnaklin, and carlos Ramírez. “ Rottboellia Cochinchinesis and Bidens Pilosa”. Agronomía Mesoamericana 7, no. 1 (June 2, 2016): 1–8. Accessed May 7, 2024. https://revistas.ucr.ac.cr/index.php/agromeso/article/view/24782.