To cite package ‘zutils’ in publications use:

  Zhang L (2025). _zutils: Zhang Liang's miscellaneous utilities_. R
  package version 0.0.10, <https://github.com/psychelzh/zutils>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {zutils: Zhang Liang's miscellaneous utilities},
    author = {Liang Zhang},
    year = {2025},
    note = {R package version 0.0.10},
    url = {https://github.com/psychelzh/zutils},
  }