To cite package ‘karyoploteR’ in publications use:

  Gel B, Serra E (2017). “karyoploteR : an R / Bioconductor package to
  plot customizable genomes displaying arbitrary data.”
  _Bioinformatics_, *33*(19), 3088-3090.
  doi:10.1093/bioinformatics/btx346
  <https://doi.org/10.1093/bioinformatics/btx346>.

A BibTeX entry for LaTeX users is

  @Article{karyoploteR,
    title = {karyoploteR : an R / Bioconductor package to plot customizable genomes displaying arbitrary data},
    author = {Bernat Gel and Eduard Serra},
    journal = {Bioinformatics},
    year = {2017},
    volume = {33},
    number = {19},
    pages = {3088-3090},
    doi = {10.1093/bioinformatics/btx346},
    pubmed = {28575171},
  }