@misc{indiciaeefd1ffd82300,
  title = {Motivating effects in self-stimulation.},
  author = {C R Gallistel},
  year = {1966},
  doi = {10.1037/h0023472},
  url = {https://pubmed.ncbi.nlm.nih.gov/5968283/},
  note = {Source identifier: 5968283}
}