To cite package ‘hwwntest’ in publications use:

  Savchev D, Nason G (2023). _hwwntest: Tests of White Noise using
  Wavelets_. R package version 1.3.2,
  <https://CRAN.R-project.org/package=hwwntest>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {hwwntest: Tests of White Noise using Wavelets},
    author = {Delyan Savchev and Guy Nason},
    year = {2023},
    note = {R package version 1.3.2},
    url = {https://CRAN.R-project.org/package=hwwntest},
  }