To cite the 'MAR1' package in publications use:

  Lindsay Scheef and Elizabeth Eli Holmes (2023). MAR1: Multivariate
  Autoregressive Modeling for Analysis of Community Time-Series Data. R
  package version 2.3.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {MAR1:  Multivariate Autoregressive Modeling for Analysis of Community Time-Series Data},
    author = {Lindsay P. Scheef and Elizabeth Eli Holmes},
    year = {2023},
    note = {R package version 2.3},
    url = {https://CRAN.R-project.org/package=MAR1},
  }