To cite package ‘mrorganic’ in publications use:

  Dietrich J, Führlich P (2023). _mrorganic: Provide soil organic
  carbon and biomass data_. R package version 0.5.6.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {mrorganic: Provide soil organic carbon and biomass data},
    author = {Jan Philipp Dietrich and Pascal Führlich},
    year = {2023},
    note = {R package version 0.5.6},
  }