Rodríguez-Flórez, Carlos David: Revision of Pleistocenic Gomphotheriidae Fauna in Colombia and case report in the Department of Valle Del Cauca. Scientific Bulletin, 2009, 13. vsk, nro 2, s. 78–85. Museum Center - Natural History Museum. Artikkelin verkkoversio. Viitattu 9.11.2010.
doi.org
dx.doi.org
Shoshani, Jeheskel: Advances in proboscidean taxonomy & classification, anatomy & physiology, and ecology & behavior. Quaternary International, 2005, 126-128. vsk, s. 5–20. doi:10.1016/j.quaint.2004.04.011
