Please cite both the mctest related paper and the mctest package: To cite mctest article in publications use:

Imdad MU, Aslam M (2020). mctest: Multicollinearity Diagnostic Measures. R package version 1.3.1, https://CRAN.R-project.org/package=mctest.

Imdadullah M, Aslam M, Altaf S (2016). “mctest: An R Package for Deteection of Collinearity among Regressors.” The R Journal, 8(2), 499-509. https://journal.r-project.org/archive/2016/RJ-2016-062/index.html.

Imdad MU, Aslam M, Altaf S, Munir A (2019). “Some New Diagnostics of Multicollinearity in Linear Regression Model.” Sains Malaysiana, 48(9), 2051-2060. http://dx.doi.org/10.17576/jsm-2019-4809-26.

Corresponding BibTeX entries:

  @Manual{,
    title = {{mctest}: Multicollinearity Diagnostic Measures},
    author = {M. U. Imdad and M. Aslam},
    year = {2020},
    note = {R package version 1.3.1},
    url = {https://CRAN.R-project.org/package=mctest},
  }

  @Article{,
    title = {mctest: An R Package for Deteection of Collinearity among
      Regressors},
    author = {M. Imdadullah and M. Aslam and S. Altaf},
    journal = {The R Journal},
    year = {2016},
    volume = {8(2)},
    pages = {499-509},
    url =
      {https://journal.r-project.org/archive/2016/RJ-2016-062/index.html},
  }

  @Article{,
    title = {Some New Diagnostics of Multicollinearity in Linear
      Regression Model},
    author = {M. U. Imdad and M. Aslam and S. Altaf and A. Munir},
    journal = {Sains Malaysiana},
    year = {2019},
    volume = {48(9)},
    pages = {2051-2060},
    url = {http://dx.doi.org/10.17576/jsm-2019-4809-26},
  }