Indexing, NumPy Developers, 2023 - This official documentation section provides a detailed explanation of NumPy's indexing capabilities, including fancy indexing, and clarifies the distinctions between views and copies.
Python for Data Analysis, Wes McKinney, 2022 (O'Reilly Media) - A widely-used textbook for data science with Python, offering a clear explanation of NumPy array indexing, including fancy indexing, and its behavior regarding data copies.
The NumPy array object (from SciPy Lecture Notes), The SciPy Lecture Notes Team, 2023 - A widely-used, open-source educational resource offering practical tutorials on NumPy, including clear examples and explanations of fancy indexing.