@misc{indiciae5103731d1135,
  title = {Internal stimuli and learning.},
  author = {W T HERON},
  year = {1949},
  doi = {10.1037/h0062327},
  url = {https://pubmed.ncbi.nlm.nih.gov/15408252/},
  note = {Source identifier: 15408252}
}