To cite faoutlier in publications use:

R. Philip Chalmers and David B. Flora (2015). faoutlier: An R Package for Detecting Influential Cases in Exploratory and Confirmatory Factor Analysis. Applied Psychological Measurement, 39(7), 573-374.<doi:10.1177/0146621615597894>

Corresponding BibTeX entry:

  @Article{,
    title = {faoutlier: An R Package for Detecting Influential Cases in
      Exploratory and Confirmatory Factor Analysis.},
    author = {R. Philip Chalmers and David B. Flora},
    journal = {Applied Psychological Measurement},
    year = {2015},
    volume = {39},
    number = {7},
    pages = {573--574},
    doi = {10.1177/0146621615597894},
  }