@misc{indiciae1609d68b5d79,
  title = {The Petrie Block Task: a modification.},
  author = {N E Penn and C Stafford},
  year = {1982},
  doi = {10.2466/pms.1982.55.2.351},
  url = {https://pubmed.ncbi.nlm.nih.gov/7155731/},
  note = {Source identifier: 7155731}
}