Gordillo, Gloria c., et al. “The Hypoglycemic Effect of Aqueous Extract of Leaves of Smallanthus Sonchifolius (yacon) in Patients With Type 2 Diabetes Mellitus”. Ciencia E Investigación, vol. 15, no. 1, June 2012, pp. 42-47, https://doi.org/10.15381/ci.v15i1.3193.