• [Wiki] http://en.wikipedia.org/wiki/Pterygioteuthis_gemmata.
• [sealifebase] https://www.sealifebase.ca/summary/Pterygioteuthis-gemmata.html.
• [Arkh1997] Arkhipkin, A. (1997). Age of the micronektonic squid Pterygioteuthis gemmata (Cephalopoda: Pyroteuthidae) from the central-east Atlantic based on statolith growth increments. J. Moll Stud., 63:287--290.
• [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.