1. Culture: a critical review of concepts and definitions;Kroeber;Papers of the Peabody Museum of American Archeology and Ethnology,1952
2. Stone handling by Japanese macaques (Macaca fuscata): Implications for tool use of stone
3. Boyd, R. and Richardson, P. J. 1985. Culture and the Evolutionary Process. Chicago, IL: University of Chicago Press
4. Social transmission, tradition and culture in primates: from the epiphenomenon to the phenomenon;Thierry;Techniques and Culture,1994
5. Cultural Behavior and Extractive Foraging in Macaca Fascicularis