To cite package ‘investdatar’ in publications use:

  Zhou O (2026). _investdatar: Investment Data Access and Preparation
  Toolkit_. R package version 0.1.6,
  <https://github.com/oliverlds/investdatar>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {investdatar: Investment Data Access and Preparation Toolkit},
    author = {Oliver Zhou},
    year = {2026},
    note = {R package version 0.1.6},
    url = {https://github.com/oliverlds/investdatar},
  }