To cite package ‘IndexNumberTools’ in publications use: Serrano M (2025). _IndexNumberTools: Working with Index Numbers_. R package version 1.1, . A BibTeX entry for LaTeX users is @Manual{, title = {IndexNumberTools: Working with Index Numbers}, author = {Miguel Serrano}, year = {2025}, note = {R package version 1.1}, url = {https://CRAN.R-project.org/package=IndexNumberTools}, }