To cite package spanner in publications use:

  Sanchez Meador A, Donager J, Ryan B (2026). _spanner: Utilities to
  Support Lidar Applications at the Landscape, Forest, and Tree Scale_.
  R package version 1.0.4, <https://github.com/bi0m3trics/spanner>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {spanner: Utilities to Support Lidar Applications at the Landscape,
Forest, and Tree Scale},
    author = {Andrew {Sanchez Meador} and Jonathon Donager and Blackburn Ryan},
    year = {2026},
    note = {R package version 1.0.4},
    url = {https://github.com/bi0m3trics/spanner},
  }

  Donager, Jonathon J., Andrew J. Sánchez Meador, and Ryan C.
  Blackburn. 2021. "Adjudicating Perspectives on Forest Structure: How
  Do Airborne, Terrestrial, and Mobile Lidar-Derived Estimates
  Compare?" Remote Sensing 13, no. 12: 2297.
  <https://doi.org/10.3390/rs13122297>.

A BibTeX entry for LaTeX users is

  @Article{,
    author = {{Donager} and Jonathon J. and Sánchez Meador and Andrew J. and {Blackburn} and Ryan C.},
    title = {Adjudicating Perspectives on Forest Structure: How Do Airborne, Terrestrial, and Mobile Lidar-Derived Estimates Compare?},
    journal = {Remote Sensing},
    volume = {13},
    number = {12},
    year = {2021},
    issn = {2072-4292},
    doi = {10.3390/rs13122297},
    url = {https://doi.org/10.3390/rs13122297},
  }