Beckmann, D. (2014). What Would Apple do? Jaico.
Chicago-čujuhus (17. p.)Beckmann, Dirk. What Would Apple Do? Mumbai: Jaico, 2014.
MLA-čujuhus (9. p.)Beckmann, Dirk. What Would Apple Do? Jaico, 2014.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.