Cita APA (7a ed.)

Hanna, K. (2016). Mastering Skype for business 2015. John Wiley and Sons.

Cita Chicago Style (17a ed.)

Hanna, Keith. Mastering Skype for Business 2015. Indianapolis, IN: John Wiley and Sons, 2016.

Cita MLA (9a ed.)

Hanna, Keith. Mastering Skype for Business 2015. John Wiley and Sons, 2016.