McFedries, P. (2012). iPhone 4S: Portable genius (2nd ed.). John Wiley & Sons.
Chicago-čujuhus (17. p.)McFedries, Paul. IPhone 4S: Portable Genius. 2nd ed. Indianapolis, IN: John Wiley & Sons, 2012.
MLA-čujuhus (9. p.)McFedries, Paul. IPhone 4S: Portable Genius. 2nd ed. John Wiley & Sons, 2012.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.