Gaya APA
OLEJNICZAK. (2009).
VOIP DEPLOYMENT FOR DUMMIES .
American:
Wiley.
Gaya Chicago
OLEJNICZAK.
VOIP DEPLOYMENT FOR DUMMIES.
American:
Wiley,
2009.
Text.
Gaya MLA
OLEJNICZAK.
VOIP DEPLOYMENT FOR DUMMIES.
American:
Wiley,
2009.
Text.
Gaya Turabian
OLEJNICZAK.
VOIP DEPLOYMENT FOR DUMMIES.
American:
Wiley,
2009.
Print.