@misc{indiciae8e08e2ce5b69,
  title = {Conditional discrimination in a runway situation.},
  author = {A J NORTH and C J BLACK},
  year = {1959},
  doi = {10.1037/h0042453},
  url = {https://pubmed.ncbi.nlm.nih.gov/13673123/},
  note = {Source identifier: 13673123}
}