APA Style

KAZA, R., ASADULLAH, S. (2005). Cisco IP Telephony: Planning, Design, Implementation, Operation, And Optimization . Indian: Pearson Education.

MLA Style

KAZA, RAMESH., ASADULLAH, SALMAN. "Cisco IP Telephony: Planning, Design, Implementation, Operation, And Optimization". Indian: Pearson Education, 2005. Text.