Suggest book and author

indirect tax - mhd rafi if ur attempt is nov 14 else bangar

direct tax-   go for manoharan

auditing - surbhi bansal plus kamalgarg is a good option 

DT: Manoharan; and off course th practice manual is very good

IDT: Yogendra Bangar; 

Audit: V K Agarwal

(case laws from Case law book and new case law from the latest RTP for both DT and IDT)

for auditing if u hav time go for padhuka

for idt bangar comprehensive and handbuk

for dt vinod gupta's modules