Preprocessing data, scikit-learn developers, 2023 - Official documentation explaining various preprocessing techniques, including feature scaling, the transformer API (fit/transform), and specific scalers like StandardScaler, MinMaxScaler, and RobustScaler.
An Introduction to Statistical Learning: With Applications in R, Gareth James, Daniela Witten, Trevor Hastie, Rob Tibshirani, 2021 (Springer) - A widely recognized textbook that provides statistical foundations for machine learning techniques, including data preparation and the theoretical basis for feature scaling. (2nd edition)