To cite package ‘tsrsa’ in publications use:

  Pav SE (2021). _tsrsa: Data and code for the book, The Sharpe Ratio:
  Statistics and Applications_. R package version 0.1.1,
  <https://github.com/shabbychef/tsrsa>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {tsrsa: Data and code for the book, The Sharpe Ratio: Statistics and
Applications},
    author = {Steven E. Pav},
    year = {2021},
    note = {R package version 0.1.1},
    url = {https://github.com/shabbychef/tsrsa},
  }