pandas.DataFrame.to_excel, Pandas Development Team, 2023 - Official documentation for saving DataFrames to Excel files, detailing available parameters and usage examples.
pandas.ExcelWriter, Pandas Development Team, 2024 - Official documentation for managing writing to Excel files, useful for placing multiple DataFrames on different sheets.
Python for Data Analysis, Wes McKinney, 2022 (O'Reilly Media) - A comprehensive book on Pandas, written by its creator, including sections on data loading and saving, such as to Excel files.