@article{kuera1967,
  title={Computational analysis of present-day American English},
  author={Henry Kučera and W. Nelson Francis and W. F. Twaddell and Mary Lois Marckworth and Laura M. Bell and John B. Carroll},
  year={1967},
  url={https://knowledgetrend.com/paper/computational-analysis-of-present-day-american-english}
}