To cite sanon in publications use:

Atsushi Kawaguchi, Gary G. Koch (2015). sanon: An R Package for Stratified Analysis with Nonparametric Covariable Adjustment. Journal of Statistical Software, 67(9), 1-37.<doi:10.18637/jss.v067.i09>

Corresponding BibTeX entry:

  @Article{,
    title = {{sanon}: An {R} Package for Stratified Analysis with
      Nonparametric Covariable Adjustment},
    author = {Atsushi Kawaguchi and Gary G. Koch},
    journal = {Journal of Statistical Software},
    year = {2015},
    volume = {67},
    number = {9},
    pages = {1--37},
    doi = {10.18637/jss.v067.i09},
  }