To cite package ‘mscstts’ in publications use:

  Muschelli J (2024). _mscstts: R Client for the Microsoft Cognitive
  Services 'Text-to-Speech' REST API_. R package version 0.6.3,
  <https://github.com/muschellij2/mscstts>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {mscstts: R Client for the Microsoft Cognitive Services 'Text-to-Speech'
REST API},
    author = {John Muschelli},
    year = {2024},
    note = {R package version 0.6.3},
    url = {https://github.com/muschellij2/mscstts},
  }