To cite BFpack in publications use:

Mulder J, Williams DR, Gu X, Tomarken A, Böing-Messing F, Olsson-Collentine A, Meijerink M, Menke J, van Aert R, Fox J, Hoijtink H, Rosseel Y, Wagenmakers E, van Lissa C (2021). “BFpack: Flexible Bayes Factor Testing of Scientific Theories in R.” Journal of Statistical Software, 100(18), 1–63. doi:10.18637/jss.v100.i18.

Corresponding BibTeX entry:

  @Article{,
    title = {{BFpack}: Flexible Bayes Factor Testing of Scientific
      Theories in {R}},
    author = {Joris Mulder and Donald R. Williams and Xin Gu and Andrew
      Tomarken and Florian B{\"o}ing-Messing and Anton
      Olsson-Collentine and Marlyne Meijerink and Janosch Menke and
      Robbie {van Aert} and Jean-Paul Fox and Herbert Hoijtink and Yves
      Rosseel and Eric-Jan Wagenmakers and Caspar {van Lissa}},
    journal = {Journal of Statistical Software},
    year = {2021},
    volume = {100},
    number = {18},
    pages = {1--63},
    doi = {10.18637/jss.v100.i18},
  }