To cite bayesTFR in publications use:

Ševčíková H, Alkema L, Raftery AE (2011). “bayesTFR: An R Package for Probabilistic Projections of the Total Fertility Rate.” Journal of Statistical Software, 43(1), 1–29. https://www.jstatsoft.org/v43/i01/.

Corresponding BibTeX entry:

  @Article{,
    title = {{bayesTFR}: An {R} Package for Probabilistic Projections
      of the Total Fertility Rate},
    author = {Hana \v{S}ev\v{c}{\'\i}kov\'{a} and Leontine Alkema and
      Adrian E. Raftery},
    journal = {Journal of Statistical Software},
    year = {2011},
    volume = {43},
    number = {1},
    pages = {1--29},
    url = {https://www.jstatsoft.org/v43/i01/},
  }