To cite biogrowth in publications use:

  Garre A, Koomen J, den Besten HMW, Zwietering MH (2023). “Modeling
  Population Growth in R with the biogrowth Package.” _Journal of
  Statistical Software_, *107*(1), 1-51. doi:10.18637/jss.v107.i01
  <https://doi.org/10.18637/jss.v107.i01>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Modeling Population Growth in {R} with the {biogrowth} Package},
    author = {Alberto Garre and Jeroen Koomen and Heidy M. W. {den Besten} and Marcel H. Zwietering},
    journal = {Journal of Statistical Software},
    year = {2023},
    volume = {107},
    number = {1},
    pages = {1--51},
    doi = {10.18637/jss.v107.i01},
  }