To cite bibliometrix in publications, please use:

  Aria, M., & Cuccurullo, C. (2017), bibliometrix: An R-tool for
  comprehensive science mapping analysis, Journal of informetrics,
  11(4), 959-975, Elsevier.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {bibliometrix: An R-tool for comprehensive science mapping analysis},
    author = {Massimo Aria and Corrado Cuccurullo},
    journal = {Journal of Informetrics},
    year = {2017},
    doi = {10.1016/j.joi.2017.08.007},
  }