Cita APA (7a ed.)

Hoffman, J. (2017). Swift 4 protocol-oriented programming: Bring predictability, performance, and productivity to your Swift applications (Third edition.). Packt.

Cita Chicago Style (17a ed.)

Hoffman, Jon. Swift 4 Protocol-oriented Programming: Bring Predictability, Performance, and Productivity to Your Swift Applications. Third edition. Birmingham, England ; Mumbai, [India]: Packt, 2017.

Cita MLA (9a ed.)

Hoffman, Jon. Swift 4 Protocol-oriented Programming: Bring Predictability, Performance, and Productivity to Your Swift Applications. Third edition. Packt, 2017.