To cite package ‘taxadb’ in publications use:

  Kari E. A. Norman, Scott Chamberlain, and Carl Boettiger (2020).
  taxadb: A high-performance local taxonomic database interface.
  Methods in Ecology and Evolution, 11(9), 1153-1159.
  https://doi.org/10.1111/2041-210X.13440

A BibTeX entry for LaTeX users is

  @Article{,
    title = {taxadb: A high-performance local taxonomic database interface},
    author = {Kari E. A Norman and Scott Chamberlain and Carl Boettiger},
    journal = {Methods in Ecology and Evolution},
    year = {2020},
    volume = {11},
    number = {9},
    pages = {1153--1159},
    doi = {10.1111/2041-210X.13440},
  }