Schultes, Richard Evans. “ETHNOPHARMACOLOGY OF THE NORTHWEST AMAZON: UNEXPECTED CHEMICAL DISCOVERIES”. Revista De La Academia Colombiana De Ciencias Exactas, Físicas Y Naturales, vol. 16, no. 62, Dec. 1987, pp. 85-92, https://doi.org/10.18257/raccefyn.16(62).1987.3662.