To cite package ‘table.express’ in publications use:

  Sarda-Espinosa A (2023). _table.express: Build 'data.table'
  Expressions with Data Manipulation Verbs_. R package version 0.4.2, ,
  <https://github.com/asardaes/table.express>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {table.express: Build 'data.table' Expressions with Data Manipulation Verbs},
    author = {Alexis Sarda-Espinosa},
    year = {2023},
    note = {R package version 0.4.2, 
},
    url = {https://github.com/asardaes/table.express},
  }