Control Flow, The Julia Language, 2024 - The official documentation serves as the definitive guide for Julia's control flow structures, including the syntax and behavior of if-elseif-else statements.
Hands-On Julia Programming: Learn the language and its applications, Stefan Karpinski, Huda Nassar, and Alan Edelman, 2020 (Packt Publishing) - Authored by one of Julia's co-creators, this book offers an in-depth treatment of Julia's core features, with dedicated sections on conditional execution and boolean logic.
Think Julia: How to Think Like a Computer Scientist, Ben Lauwens and Allen B. Downey, 2019 (O'Reilly Media) - An excellent book for beginners that introduces programming concepts using Julia, with clear explanations of conditional statements, logical operators, and nesting.