To cite package 'AGread' in publications use:

Hibbing PR (2018). “AGread: Read Data Files from ActiGraph Monitors.” https://cran.r-project.org/package=AGread.

Corresponding BibTeX entry:

  @Misc{,
    title = {AGread: Read Data Files from ActiGraph Monitors},
    author = {Paul R. Hibbing},
    year = {2018},
    url = {https://cran.r-project.org/package=AGread},
  }