@misc{indiciae19f967bf6374,
  title = {Surface structure, deep structure, and transformations: a model for syntactic development.},
  author = {W A Hass and J M Wepman},
  year = {1969},
  doi = {10.1044/jshd.3404.303},
  url = {https://pubmed.ncbi.nlm.nih.gov/5349138/},
  note = {Source identifier: 5349138}
}