The N-dimensional array (ndarray), NumPy Developers, 2024 - The official documentation provides comprehensive details on the structure of NumPy's ndarray and its core attributes like ndim, shape, size, and dtype.
Python for Data Analysis, Wes McKinney, 2022 (O'Reilly Media) - This book offers a widely recognized practical introduction to NumPy, including how to create arrays and inspect their fundamental attributes.
NumPy arrays, Gaël Varoquaux, Emmanuelle Gouillart, Olav Vahtras, and contributors, 2024 - A well-regarded online resource that clearly explains the basic concepts of NumPy arrays, including their dimensions, shape, size, and data types.