To cite package ‘roots’ in publications use:

Jawaid W (2017). roots: Reconstructing Ordered Ontogenic Trajectories. R package version 1.0, https://CRAN.R-project.org/package=roots.

Corresponding BibTeX entry:

  @Manual{,
    title = {roots: Reconstructing Ordered Ontogenic Trajectories},
    author = {Wajid Jawaid},
    year = {2017},
    note = {R package version 1.0},
    url = {https://CRAN.R-project.org/package=roots},
  }