@article{12439,
  address = {Washington},
  author  = {Murphy, R. F.},
  journal = {American Anthropologist},
  key     = {Murphy (1957)},
  number  = {6},
  pages   = {1018-1035},
  title   = {Intergroup Hostility and Social Cohesion},
  volume  = {59},
  year    = {1957}
}