• [Wiki] http://en.wikipedia.org/wiki/Symphurus.
• [fishbase] http://www.fishbase.org/summary/Symphurus-plagiusa.html.
• [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.
• [OlneGran1976] Olney, J. E. and Grant, G. C. (1976). Early planktonic larvae of the blackcheek tonguefish, Symphurus plagiusa (Pisces: Cynoglossidae), in the Lower Chesapeake Bay. Cheasapeake Science, 17(4) pages = {229-237}.
• [TerwMunr1999] Terwilliger, M. R. and Munroe, T. A. (1999). Age, growth, longevity, and mortality of blackcheek tonguefish, Symphurus plagiusa (Cynoglossidae: Pleuronectiformes), in Chesapeake bay, Virginia. Fish. Bull., 97:340–361.