1. Abbott, D. (Ed.). (1983). The biographical dictionary of scientists: Biologists. London: Muller.
2. Barlow, N. (Ed.). (2005 [1958]). The autobiography of Charles Darwin. New York: Norton.
3. Barnett, V. (2020). Mosaic cognition. In J. Vonk & T. K. Shackelford (Eds.), Encyclopedia of animal cognition and behavior. Cham: Springer. https://doi.org/10.1007/978-3-319-47829-6_787-1.
4. Browne, J. (2003). Charles Darwin: The power of place. London: Pimlico.
5. Clark, W. L. G. (1962). History of the primates. London: British Museum.