Barrett, B. J., Monteza-Moreno, C. M., Dogandzic, T., Zwyns, N., Ibanez, A., & Crofoot, M. C. (2018). Habitual stone-tool-aided extractive foraging in white-faced capuchins, Cebus capucinus. Royal Society Open Science, 5(8): 181002. doi:10.1098/rsos.181002.