pandas.DataFrame.iloc, The Pandas Development Team, 2024 - Official documentation for the .iloc accessor, providing direct usage examples and technical details.
Indexing and Selecting Data, The Pandas Development Team, 2024 - A section of the Pandas User Guide that explains various data selection methods, including .iloc, and contrasts it with .loc.
Python for Data Analysis, Wes McKinney, 2022 (O'Reilly Media) - A foundational book for learning Pandas, covering data selection techniques like .iloc in a comprehensive manner.