To cite NLMR in publications use:

  Sciaini M, Fritsch M, Scherer C, Simpkins CE. NLMR and
  landscapetools: An integrated environment for simulating and
  modifying neutral landscape models in R. Methods Ecol Evol.
  2018;9:2240-2248.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {NLMR and landscapetools: An integrated environment for simulating and modifying neutral landscape models in R},
    author = {Marco Sciaini and Matthias Fritsch and Cedric Scherer and Craig E. Simpkins},
    journal = {Methods in Ecology and Evolution},
    volume = {9},
    pages = {2240--2248},
    year = {2018},
    doi = {10.1111/2041-210X.13076},
  }