To cite package ‘SII’ in publications use:

Warnes GR, Shaver M (2026). SII: Calculate ANSI/ASA S3.5-1997 (R2024) Speech Intelligibility Index. R package version 1.3.0, https://CRAN.R-project.org/package=SII.

Corresponding BibTeX entry:

  @Manual{,
    title = {SII: Calculate ANSI/ASA S3.5-1997 (R2024) Speech
      Intelligibility Index},
    author = {Gregory R. Warnes and Mark Shaver},
    year = {2026},
    note = {R package version 1.3.0},
    url = {https://CRAN.R-project.org/package=SII},
  }