To cite package ‘sonify’ in publications use:

Siegert S, Williams R (2017). sonify: Data Sonification - Turning Data into Sound. R package version 0.0-1, https://CRAN.R-project.org/package=sonify.

Corresponding BibTeX entry:

  @Manual{,
    title = {sonify: Data Sonification - Turning Data into Sound},
    author = {Stefan Siegert and Robin Williams},
    year = {2017},
    note = {R package version 0.0-1},
    url = {https://CRAN.R-project.org/package=sonify},
  }