CCNA voice 640-461 : offical cert guide /
Cioara, Jeremy.
Valentine, Michael,1966-
Sculz, David.CCNA voice 640-461 video : live lessons.
Indianapolis, Ind. : Cisco Press,
c2012.
Accompanied by DVD: CCNA voice 640-461 video : live lessons / David Schulz.
In presentation sleeve.
"Video lessons and book side by side"--Sleeve.