To cite package ‘SoilTesting’ in publications use:

  Das B, Das D (2024). _SoilTesting: Organic Carbon and Plant Available
  Nutrient Contents in Soil_. R package version 0.1.0,
  <https://github.com/bappa10085/soiltesting>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {SoilTesting: Organic Carbon and Plant Available Nutrient Contents in Soil},
    author = {Bappa Das and Debarup Das},
    year = {2024},
    note = {R package version 0.1.0},
    url = {https://github.com/bappa10085/soiltesting},
  }