The if statement, Python Software Foundation, 2024 - Provides the authoritative specification and details of the if, elif, and else statements in Python.
Lecture Notes: Branching and Iteration (Lecture 3), Ana Bell, Eric Grimson, and John Guttag, 2016MIT OpenCourseWare (Massachusetts Institute of Technology) - These lecture notes from a reputable university course provide an academic foundation for understanding conditional statements and control flow.