- https://www.programiz.com/python-programming/function
- https://www.educative.io/edpresso/what-are-keyword-arguments-in-python
- https://www.w3schools.com/python/python_functions.asp
- https://www.w3schools.com/python/python_lambda.asp
- https://www.datacamp.com/community/tutorials/docstrings-python
- CS Dojo - How To Use Functions In Python - eng
- Corey Schafer - Python Tutorial for Beginners 8: Functions - eng
- Timur Shemsedinov - 👶 JavaScript для начинающих: 6. Функции и область видимости - rus
- YouRa Allakhverdov - Функции - rus
24.01.2022 - Odesa