To cite package sp in publications use:
Pebesma E, Bivand R (2005).“Classes and methods for spatial data in R.”R News,5(2), 9–13.https://CRAN.R-project.org/doc/Rnews/.
Bivand R, 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 = {Edzer J. Pebesma and Roger Bivand}, title = {Classes and methods for spatial data in {R}}, journal = {R News}, year = {2005}, volume = {5}, number = {2}, pages = {9--13}, month = {November}, url = {https://CRAN.R-project.org/doc/Rnews/}, } @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/}, }