To cite package ‘ultrapolaRplot’ in publications use:

Outkin Y, Washington J (2026). ultrapolaRplot: Plotting Ultrasound Tongue Traces. R package version 0.2.1, https://CRAN.R-project.org/package=ultrapolaRplot.

Corresponding BibTeX entry:

  @Manual{,
    title = {ultrapolaRplot: Plotting Ultrasound Tongue Traces},
    author = {Yana Outkin and Jonathan Washington},
    year = {2026},
    note = {R package version 0.2.1},
    url = {https://CRAN.R-project.org/package=ultrapolaRplot},
  }