@book{ BB21237993,
  author    = "Waal, F. B. M. de (Frans B. M.) and Macedo, Stephen and Ober, Josiah",
  title     = "Primates and philosophers : how morality evolved",
  publisher = "Princeton University Press",
  year      = "2016",
  series    = "Princeton science library",
  number    = "",
  URL       = "https://ci.nii.ac.jp/ncid/BB21237993"
}