To cite package ‘spectrolab’ in publications use:

  Meireles J, Schweiger A, Cavender-Bares J (2017). _spectrolab: Class
  and Methods for Spectral Data in R_. doi:10.5281/zenodo.3934575
  <https://doi.org/10.5281/zenodo.3934575>, R package version 0.0.19,
  <https://CRAN.R-project.org/package=spectrolab>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {spectrolab: Class and Methods for Spectral Data in R},
    author = {Jose Eduardo Meireles and Anna Schweiger and Jeannine Cavender-Bares},
    year = {2017},
    note = {R package version 0.0.19},
    url = {https://CRAN.R-project.org/package=spectrolab},
    doi = {10.5281/zenodo.3934575},
  }