Good books referred to JTO Exam

Which book for refer for JTO exam, would you please suggest some good books refereed to JTO Exam???

[Kiran Chandar]

There are a lot of good books refereed to JTO Exam, & a lot of other study material, here I am giving JTO exam books:

BSNL - Junior Telecom Officer (JTO) Recruitment Exam (English) 1st Edition
Author: RPH Editorial Board



Study Guide to BSNL LICE JTO 3rd Edition
Author: G K P


BSNL Telecom - JTO Recruitment Examination : Includes 2013 Solved Papers 7th Edition
Author: GKP



BSNL JTO Junior Telecom Officers Exam Guide
R. Gupta's