[en] The Swift Programming Language (Swift 4) Apple Inc.

[en] [Instructions 09] • iPad User Guide Apple Inc.

[en] Using Swift With Cocoa and Objective-C Apple Inc.

[en] The Swift Programming Language Apple Inc.

[en] The Swift Programming Language (Swift 5.3) Apple Inc.

[en] [Swift 04] • The Swift Programming Language Apple Inc.

[en] Quicktime for the Web · for Windows and Macintosh · 2nd Edition Morgan Kaufmann Publishers

[en] Cocoa Fundamentals Guide www.apple.com

[en] Object-Oriented Programming with Objective-C www.apple.com

[en] The Objective-C Programming Language Apple Publications

[en] High Score Ellora's Cave Publishing Inc.

[en] Avalee's Gift The Wild Rose Press, Inc.

[en] Sewer Mayhem FTK Publishing

[en] The Andalite Chronicles Scholastic Inc.

[en] Last Chance to be a Cowboy Hillcrest Media Group, Inc.

[en] No More Lies Sandy Appleyard

[en] Dinosaurs Help Out The Rosen Publishing Group, Inc

[en] Iron Curtain: The Crushing of Eastern Europe, 1944-1956 Random House, Inc.

[en] [Animorphs 04] • The Message Scholastic, Inc.

[en] [Everworld 05] • Discover the Destroyer Scholastic Inc.