Arroyo Figueroa, Gabriela, Tarsicio Medina Saavedra, Rosa Elena Pérez Sánchez, and Ruy Ortiz Rodríguez. “Morphology and Age of the Cactus Pear Opuntia Ficus-Indica on the Production of (Dactylopius Coccus Costa) and Carminic Acid Content”. Nova Scientia 12, no. 25 (October 23, 2020). Accessed March 3, 2021. http://nova_scientia.delasalle.edu.mx/ojs/index.php/Nova/article/view/2519.