To cite package ‘soilassessment’ in publications use:

  Omuto C (2023). _soilassessment: Assessment Models for Agriculture
  Soil Conditions and Crop Suitability_. R package version 0.2.6,
  <https://github.com/cranhaven/cranhaven.r-universe.dev>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {soilassessment: Assessment Models for Agriculture Soil Conditions and Crop
Suitability},
    author = {Christian Thine Omuto},
    year = {2023},
    note = {R package version 0.2.6},
    url = {https://github.com/cranhaven/cranhaven.r-universe.dev},
  }