Cita APA (7a ed.)

Blewitt, A. D. (2016). Swift essentials: Discover how to build iOS and watchOS applications in Swift 2 using Xcode (Second edition.). Packt Publishing.

Cita Chicago Style (17a ed.)

Blewitt, Alex Dr. Swift Essentials: Discover How to Build IOS and WatchOS Applications in Swift 2 Using Xcode. Second edition. Birmingham, UK: Packt Publishing, 2016.

Cita MLA (8a ed.)

Blewitt, Alex Dr. Swift Essentials: Discover How to Build IOS and WatchOS Applications in Swift 2 Using Xcode. Second edition. Packt Publishing, 2016.