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.

Corresponding BibTeX entry:

    title = {Modeling Population Growth in {R} with the {biogrowth}
    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},