guyz please suggest which book shall i refer for direct tax there are so, many option m telling one by one 

1.Professional Approach to Direct Tax Laws and International Taxation Set of (2 Volumes) By Dr Girish Ahuja Dr Ravi Gupta for may 2018 Exam . see 

2.Comprehensive Guide to Direct Tax Laws and International Taxation BY DR. YOGENDRA BANGAR DR. VANDANA BANGAR. see

3.CAPSULE STUDIES ON DIRECT TAX LAWS ( OLD AND NEW SYLLABUS ) BY CA DURGESH SINGH . see

kindly suggest only these three are available currently .

Thanks in advance