Chauca Aguilar, M. A., and S. G. Chávez Quintana. “Phenols and Antioxidant Capacity of Psidium Guajava, Vaccinium Myrtillus, Selenicereus Megalanthus and Physalis Peruviana”. Bioagro, vol. 32, no. 3, Oct. 2020, pp. 225-30, https://revistas.uclave.org/index.php/bioagro/article/view/2790.