To cite package ‘SpeTestNP’ in publications use:

  Boucher H, Lavergne P (2022). _SpeTestNP: Non-Parametric Tests of
  Parametric Specifications_. R package version 1.1.0,
  <https://github.com/hippolyteboucher/spetestnp>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {SpeTestNP: Non-Parametric Tests of Parametric Specifications},
    author = {Hippolyte Boucher and Pascal Lavergne},
    year = {2022},
    note = {R package version 1.1.0},
    url = {https://github.com/hippolyteboucher/spetestnp},
  }