@misc{indiciae5f61e81c6094,
  title = {Practice as a psychotherapeutic variable: an experimental analysis within single cases.},
  author = {H Leitenberg and S Agras and J A Edwards and L E Thomson and J P Wincze},
  year = {1970},
  doi = {10.1016/0022-3956(70)90009-9},
  url = {https://pubmed.ncbi.nlm.nih.gov/5440862/},
  note = {Source identifier: 5440862}
}