Books
CCENT/CCNA ICND1 100-101 Official Cert Guide
2013
CCNA Routing and Switching ICND2 200-101 Official Cert Guide
2013
CCIE Routing and Switching v5.0 Official Cert Guide, Volume 1, 5/e
2014
CCNA 640-802 Official Cert Library, Updated, 3/e
2011
CCENT/CCNA ICND1 640-822 Official Cert Guide, 3/e
2011
CCIE Routing and Switching Certification Guide, 4/e
2012