To cite mdsr in publications use:

  Benjamin S. Baumer, Daniel T. Kaplan, Nicholas J. Horton (2021).
  Modern Data Science with R. 2nd edition, Boca Raton: Chapman and
  Hall/CRC Press, 1--673. URL
  https://www.routledge.com/Modern-Data-Science-with-R/Baumer-Kaplan-Horton/p/book/9780367191498.

A BibTeX entry for LaTeX users is

  @Book{,
    title = {Modern Data Science with {R}},
    author = {Benjamin S. Baumer and Daniel T. Kaplan and Nicholas J. Horton},
    publisher = {Boca Raton: Chapman and Hall/CRC Press},
    year = {2021},
    month = {3},
    edition = {2nd},
    pages = {1--673},
    isbn = {9780367191498},
    url = {https://www.routledge.com/Modern-Data-Science-with-R/Baumer-Kaplan-Horton/p/book/9780367191498},
  }