• [Wiki] http://en.wikipedia.org/wiki/Polydactylus_quadrifilis.
• [fishbase] https://www.fishbase.de/summary/Polydactylus-quadrifilis.html.
• [ButlChil2018] Butler, E. C., Childs, A.-R., Winkler, A. C., Milner, M. V., and Potts, W. M. (2018). Evidence for protandry in Polydactylus quadrifilis in the Kwanza Estuary, Angola, and its implications for local fisheries. Environ Biol Fish, 101:301–313. doi:10.1007/s10641-017-0699-6.
• [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.
• [MorePalo1995] Moreau, J., Palomares, M., Torres, F., and Pauly, D. (1995). Atlas démographique des populations de poissons d'eau douce d'Afrique. Technical report, ICLARM Tech. Rep.