国外《Objective-C for Absolute Beginners》电子书配套源代码，对IOS初学者有很好参考价值。-Foreign " Objective-C for of Absolute Beginners" eBook supporting source code of IOS for beginners, a good reference value.

国外《Pro Objective-C Design Patterns for iOS》电子书配套源代码，对深入钻研IOS专业开发有很好参考价值。-Abroad, " Pro Objective-C Design Patterns for the iOS eBook supporting source code, a good reference value to delve into the IOS professional development.

国外《Developing C# Apps for iPhone and iPad using MonoTouch for .NET Developers》电子书配套源代码，对从事iPhone和iPad的C#应用开发的工程师有很好参考价值。-Foreign Developing C,#, Apps, for the iPhone and the iPad using of MonoTouch eBook supporting source code for. NET Developers &qu