Coral T, Lilian Graciela, et al. “Market Survey for the Marketing of Cape Gooseberry Physalis Peruviana L. In Nariño”. Revista De Ciencias Agrícolas, vol. 29, no. 1, Sept. 2012, pp. 88-98, https://revistas.udenar.edu.co/index.php/rfacia/article/view/371.