To cite randomizeR in publications use:

Uschner D, Schindler D, Hilgers R, Heussen N (2018). “randomizeR: An R Package for the Assessment and Implementation of Randomization in Clinical Trials.” Journal of Statistical Software, 85(8), 1–22. doi: 10.18637/jss.v085.i08.

Corresponding BibTeX entry:

  @Article{,
    title = {{randomizeR}: An {R} Package for the Assessment and
      Implementation of Randomization in Clinical Trials},
    author = {Diane Uschner and David Schindler and Ralf-Dieter Hilgers
      and Nicole Heussen},
    journal = {Journal of Statistical Software},
    year = {2018},
    volume = {85},
    number = {8},
    pages = {1--22},
    doi = {10.18637/jss.v085.i08},
  }