1. Boadas, A. R., 1983, Geografía del Amazonas Venezolano: Caracas, Ariel-Seix Barral Venezolana, 239 p.
2. Divisão de Aguas, 1968, Medicão de descarga e seus problemas técnicos no maior rio do mundo: Brasil Departamento Nacional de Aguas e Energia, 45 p.
3. Gannett, H., 1901, Profiles of rivers of the United States: U.S. Geological Survey Water-Supply and Irrigation Paper 44, 100 p., 11 pl.
4. Hjelmfelt, A. T., Jr., 1978, Amazon basin hydrometeorology: American Society of Civil Engineers Proceedings, Journal of Hydraulics Division, v. 104, p. 887–897.
5. Humphreys, A. A., and H. L. Abbot, 1861 [1876], Report upon the physics and hydraulics of the Mississippi River: U.S. Army Corps Topographical Engineers Professional Paper 4 [13], 691 p., 25 pl.