To cite assignR in publications use:

Ma C, Zanden HBV, Wunder MB, Bowen GJ (2020). “assignR: An R package for isotope-based geographic assignment.” Methods in Ecology and Evolution. doi: 10.1111/2041-210X.13426, https://doi.org/10.1111/2041-210X.13426.

Corresponding BibTeX entry:

  @Article{,
    title = {assignR: An R package for isotope-based geographic
      assignment},
    author = {Chao Ma and Hannah B. Vander Zanden and Michael B. Wunder
      and Gabriel J. Bowen},
    journal = {Methods in Ecology and Evolution},
    year = {2020},
    doi = {10.1111/2041-210X.13426},
    url = {https://doi.org/10.1111/2041-210X.13426},
  }