Hernández S, Ortiz M; Segovia M, Barros J; Viracucha, Vaca S (18 March 2023). "Informe Sísmico Especial No. 2023-003" [Special Seismic Report No. 2023-003]. Instituto Geofísico (in Spanish). Retrieved 29 September 2023.
National Earthquake Information Center (18 March 2023). "M 6.8 – 10 km NNW of Baláo, Ecuador". United States Geological Survey. Retrieved 18 March 2023.