^"Paullinia L."Germplasm Resources Information Network. United States Department of Agriculture. 2006-03-29. Archived from the original on 2011-06-05. Retrieved 2010-01-19.
^Bates, H. W. (1864). The naturalist on the River Amazons, a record of adventures, habits of animals, sketches of Brazilian and Indian life and aspects of nature under the Equator during eleven years of travel. London: J. Murray. Second edition. (Reprinted in paperback facsimile, Elibron Classics, 2005.) Page 242.