To cite bridgesampling in publications use:

Gronau QF, Singmann H, Wagenmakers E (2020). “bridgesampling: An R Package for Estimating Normalizing Constants.” Journal of Statistical Software, 92(10), 1–29. doi: 10.18637/jss.v092.i10.

Corresponding BibTeX entry:

  @Article{,
    title = {{bridgesampling}: An {R} Package for Estimating
      Normalizing Constants},
    author = {Quentin F. Gronau and Henrik Singmann and Eric-Jan
      Wagenmakers},
    journal = {Journal of Statistical Software},
    year = {2020},
    volume = {92},
    number = {10},
    pages = {1--29},
    doi = {10.18637/jss.v092.i10},
  }