APA (7th ed.) Zitazioa
Hanna, K. (2016). Mastering Skype for business 2015. John Wiley and Sons.
Chicago Style (17th ed.) Zitazioa
Hanna, Keith. Mastering Skype for Business 2015. Indianapolis, IN: John Wiley and Sons, 2016.
MLA (9th ed.) Zitazioa
Hanna, Keith. Mastering Skype for Business 2015. John Wiley and Sons, 2016.
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