@misc{indiciaeeb3b70723895,
  title = {The U.S. visa qualifying examination.},
  author = {E J Levit},
  year = {1979},
  doi = {10.1016/s0140-6736(79)91751-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/87643/},
  note = {Source identifier: 87643}
}