«Turtle Vocalizations as the First Evidence of Posthatching Parental Care in Chelonians». Journal of Comparative Psychology 127(1): 24–32. See also Ferrara, C. R., et al. 2014. «Sound Communication and Social Behavior in an Amazonian River Turtle (Podocnemis Expansa)». Herpetologica 70(2): 149–156.
