To cite qdapRegex in publications, please use:

Rinker, T. W. (2017). qdapRegex: Regular Expression Removal, Extraction, and Replacement Tools. 0.7.2. University at Buffalo. Buffalo, New York. http://github.com/trinker/qdapRegex

Corresponding BibTeX entry:

  @Manual{,
    title = {{qdapRegex}: Regular Expression Removal, Extraction, and
      Replacement Tools},
    author = {Tyler W. Rinker},
    organization = {University at Buffalo/SUNY},
    address = {Buffalo, New York},
    note = {0.7.2},
    year = {2017},
    url = {http://github.com/trinker/qdapRegex},
  }