To cite the 'pathmodelfit' R package and methods paper in publications use:

Culpepper SA, Williams L (2020). pathmodelfit: Fit Indices for the Path Component of Latent Variable Structural Models.

Corresponding BibTeX entry:

  @Manual{,
    title = {{pathmodelfit: Fit Indices for the Path Component of
      Latent Variable Structural Models}},
    author = {Steven Andrew Culpepper and Larry Williams},
    year = {2020},
  }