To cite hmmr in publications use:

Visser I, Speekenbrink M (2019). Hidden Markov Models with R. Springer.

Corresponding BibTeX entry:

  @Book{,
    title = {Hidden Markov Models with R},
    author = {Ingmar Visser and Maarten Speekenbrink},
    year = {2019},
    publisher = {Springer},
  }