To cite package 'NSO1212' in publications use:

  Makhgal Ganbold (2021). NSO1212: NSO's Open Data API Handler. R
  package version 1.4.0. https://CRAN.R-project.org/package=NSO1212

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {NSO's Open Data API Handler},
    author = {Makhgal Ganbold},
    year = {2021},
    note = {R package version 1.4.0},
    url = {https://CRAN.R-project.org/package=NSO1212},
  }