To cite the 'gretlR' package in publications use:

Mati S (2020). gretlR: Knit-Engine for 'Gretl'. R package version 0.1.0, https://github.com/sagirumati/gretlR/.

Corresponding BibTeX entry:

  @Manual{,
    title = {gretlR: Knit-Engine for 'Gretl'},
    author = {Sagiru Mati},
    year = {2020},
    note = {R package version 0.1.0},
    url = {https://github.com/sagirumati/gretlR/},
  }