To cite package ‘nullabor’ in publications use:

  Buja A, Cook D, Hofmann H, Lawrence M, Lee E, Swayne DF, Wickham H
  (2009). “Statistical Inference for Exploratory Data Analysis and
  Model Diagnostics.” _Royal Society Philosophical Transactions A_,
  *367*(1906), 4361-4383. doi:10.1098/rsta.2009.0120
  <https://doi.org/10.1098/rsta.2009.0120>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Statistical Inference for Exploratory Data Analysis and Model Diagnostics},
    author = {Andreas Buja and Dianne Cook and Heike Hofmann and Michael Lawrence and Eun-kyung Lee and Deborah F. Swayne and Hadley Wickham},
    journal = {Royal Society Philosophical Transactions A},
    year = {2009},
    volume = {367},
    number = {1906},
    pages = {4361--4383},
    doi = {10.1098/rsta.2009.0120},
  }