To cite spdep in publications use one or more of the following as appropriate:

Bivand R, Wong DWS (2018). “Comparing implementations of global and local indicators of spatial association.” TEST, 27(3), 716–748. https://doi.org/10.1007/s11749-018-0599-x.

Bivand RS, Pebesma E, Gomez-Rubio V (2013). Applied spatial data analysis with R, Second edition. Springer, NY. https://asdar-book.org/.

Corresponding BibTeX entries:

  @Article{,
    author = {Roger Bivand and David W. S. Wong},
    title = {Comparing implementations of global and local indicators
      of spatial association},
    journal = {TEST},
    year = {2018},
    volume = {27},
    number = {3},
    pages = {716--748},
    url = {https://doi.org/10.1007/s11749-018-0599-x},
  }
  @Book{,
    author = {Roger S. Bivand and Edzer Pebesma and Virgilio
      Gomez-Rubio},
    title = {Applied spatial data analysis with {R}, Second edition},
    year = {2013},
    publisher = {Springer, NY},
    url = {https://asdar-book.org/},
  }