Preprocessing data, scikit-learn developers, 2024 (scikit-learn project) - Official documentation for Scikit-learn's data preprocessing module, detailing various transformers and their usage.
An Introduction to Statistical Learning: With Applications in R, Gareth James, Daniela Witten, Trevor Hastie, Rob Tibshirani, 2013 (Springer) - A widely recognized textbook providing a theoretical foundation for statistical learning methods, including discussions on data preparation and feature engineering.