To cite momentuHMM in a publication use:

  McClintock, B.T. and Michelot, T. (2018) momentuHMM: R package for
  generalized hidden Markov models of animal movement. Methods in
  Ecology and Evolution 9(6): 1518-1530.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {momentu{HMM}: {R} package for generalized hidden {M}arkov models of animal movement},
    author = {Brett T. McClintock and Th{'e}o Michelot},
    journal = {Methods in Ecology and Evolution},
    year = {2018},
    volume = {9},
    number = {6},
    pages = {1518-1530},
    url = {http://dx.doi.org/10.1111/2041-210X.12995},
    doi = {10.1111/2041-210X.12995},
  }

Additions and modifications to momentuHMM are frequent, to help with
reproducibility of output please cite its version number. Find it with
'help(package=momentuHMM)'.