CCIE RS Quick Review Kit
OSPF Network Design Solutions
Ccna ip routing fundamentals
CCNA IP routing fundamentals
Building Scalable Cisco Internetworks (Bsci)
ROUTE Exam Guide v3.2c
ROUTE Exam Guide v3.3
92264738-Ccnp-Route-Exam-Guide-v2-5.pdf
TSHOOT Exam Guide v3.2