To cite grainscape in publications use:

  Chubaty A, Galpern P, Doctolero S (2020). “The R toolbox grainscape
  for modelling and visualizing landscape connectivity using
  spatially-explicit networks.” _Methods in Ecology and Evolution_,
  *11*(4), 591-595. doi:10.1111/2041-210X.13350
  <https://doi.org/10.1111/2041-210X.13350>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {The {R} toolbox {grainscape} for modelling and visualizing landscape connectivity using spatially-explicit networks},
    author = {Alex M Chubaty and Paul Galpern and Sam C Doctolero},
    journal = {Methods in Ecology and Evolution},
    year = {2020},
    volume = {11},
    number = {4},
    pages = {591--595},
    doi = {10.1111/2041-210X.13350},
  }

  Chubaty A, Galpern P, Doctolero S (2023). _grainscape: Landscape
  Connectivity, Habitat, and Protected Area Networks_. R package
  version 0.4.4, <https://CRAN.R-project.org/package=grainscape>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {{grainscape}: Landscape Connectivity, Habitat, and Protected Area Networks},
    author = {Alex M Chubaty and Paul Galpern and Sam Doctolero},
    year = {2023},
    note = {R package version 0.4.4},
    url = {https://CRAN.R-project.org/package=grainscape},
  }