The Anatomy of the Common Squid: Loligo Pealii, Lesueur. E-book. Formato PDF Leonard Worcester Williams   -  Forgotten Books, 2017  - 

Frontispiece. Photographs of a model of a male squid in The American Museum of Natural History. Plate 1, Fig. 1. Cephalic and preorbital cartilages (enlarged four diameters), right-ventral aspect.