To cite package 'lumendb' in publications use:

Thomas J. Leeper (2017). lumendb: Lumen Database API Client. R package version 0.2.1.

Corresponding BibTeX entry:

  @Manual{,
    title = {lumendb: Lumen Database API Client},
    author = {Thomas J. Leeper},
    year = {2017},
    note = {R package version 0.2.1},
  }