To cite package ‘chromDraw’ in publications use:

  Janecka J, Lysak MA. chromDraw: an R package for visualization of
  linear and circular karyotypes. Chromosome Research. 2015:1-7

A BibTeX entry for LaTeX users is

  @Article{,
    title = {chromDraw: an R package for visualization of linear and circular karyotypes},
    author = {Jan Janecka and Martin A Lysak},
    year = {2015},
    journal = {Chromosome Research},
    doi = {10.1007/s10577-015-9513-5},
    url = {http://link.springer.com/article/10.1007/s10577-015-9513-5},
  }