David Premack and Guy Woodruff. «Does the chimpanzee have a theory of mind?» Behavioral and Brain Sciences 1.04 (1978): 515–526.
235
Heidi E. Harley. «Consciousness in dolphins? A review of recent evidence.» Journal of Comparative Physiology A 199.6 (2013): 565–582.
236
Joshua M. Plotnik, Frans B. M. De Waal, and Diana Reiss. «Self-recognition in an Asian elephant.» Proceedings of the National Academy of Sciences 103.45 (2006): 17053–17057.
