Hello Akshad,

Here are some of the recommended books for ATMA 2019:

• The Pearson Guide to Verbal Ability and Logical Reasoning for the CAT with CD-Nishit K. Sinha
• The Pearson Guide to Quantitative Aptitude for MBA Entrance Examinations-Dinesh Khattar
• Fast Track Objective Arithmetic-Rajesh Verma
• Mission MBA MAT Mock tests & Solved papers-Tarun Goyal
• The Complete Reference Manual for CMAT-SK Sinha
• MBA Solved Papers-Gautam Puri

I would suggest you visit the careers360's link given below which has detailed info of the books and also has a link to download the free e-books for ATMA.

The link for the same is:https://bschool.careers360.com/download/atma-ebooks

Hope this helps and all the very best!