Scientific Sources

Goodall, J. (1986). Social rejection, exclusion, and shunning among the Gombe chimpanzees. Ethology and Sociobiology, 7(3-4), 227-236. https://doi.org/10.1016/0162-3095(86)90050-6

Van Lawick-Goodall, J., Van Lawick, H., & Packer, C. (1973). Tool-use in Free-living Baboons in the Gombe National Park, Tanzania. Nature, 241, 212-213. https://doi.org/10.1038/241212a0

Whiten, A., Goodall, J., McGrew, W. C., Nishida, T., Reynolds, V., Sugiyama, Y., Tutin, C. E. G., Wrangham, R. W., & Boesch, C. (1999). Cultures in chimpanzees. Nature, 399, 682-685. https://doi.org/10.1038/21415