McFedries, P. (2012). iPhone 4S: Portable genius (2nd ed.). John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)McFedries, Paul. IPhone 4S: Portable Genius. 2nd ed. Indianapolis, IN: John Wiley & Sons, 2012.
Lua MLA (9ú heag.)McFedries, Paul. IPhone 4S: Portable Genius. 2nd ed. John Wiley & Sons, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.