@misc{indiciaeefffbe72345e,
  title = {Second-order conditioning with food unconditioned stimulus.},
  author = {P C Holland and R A Rescorla},
  year = {1975},
  doi = {10.1037/h0076219},
  url = {https://pubmed.ncbi.nlm.nih.gov/1120816/},
  note = {Source identifier: 1120816}
}