To cite package ‘cleanNPN’ in publications use:

  Shepherd B, Song Y (2026). _cleanNPN: Reproducible Workflow for
  Cleaning National Phenology Network Status and Intensity Data_. R
  package version 0.0.0.9000,
  <https://github.com/pitt-songlab/cleannpn>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {cleanNPN: Reproducible Workflow for Cleaning National Phenology Network
Status and Intensity Data},
    author = {Brianna Shepherd and Yiluan Song},
    year = {2026},
    note = {R package version 0.0.0.9000},
    url = {https://github.com/pitt-songlab/cleannpn},
  }