To cite package ‘dematel’ in publications use:

  Ozdemir M, Celikbilek Y (2021). _dematel: Decision Making Trial and
  Evaluation Laboratory Technique in R_. R package version 0.1.0,
  <https://CRAN.R-project.org/package=dematel>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {dematel: Decision Making Trial and Evaluation Laboratory Technique in R},
    author = {Muhlis Ozdemir and Yakup Celikbilek},
    year = {2021},
    note = {R package version 0.1.0},
    url = {https://CRAN.R-project.org/package=dematel},
  }