The below mentioned are the Subject-wise Reference books for TISSNET 2019.
The comprehensive guide to the preparation for Quantitative Aptitude is ‘How to Prepare Quantitative Aptitude for CAT’ by Arun Sharma "How to Prepare for Quantitative Aptitude for CAT"
Quantitative Aptitude by RS Aggarwal.
You can also refer to any MBA entrance material for Quantitative Aptitude.
The best book you can buy for logical reasoning is "A Modern Approach to Verbal & Non-Verbal Reasoning" by R S Aggarwal
"How to prepare for Logical Reasoning for CAT" by Arun Sharma.
A very good book for mastering the basics and shortcuts for data interpretation is a book by Arihant publication Accredited Guide to Data Interpretation and Data Sufficiency"
Another small book for practicing Data Interpretation is An Advanced Approach to Data Interpretation" by RS Aggarwal.
You can also get the basics of Data Interpretation in the book Quantitative Aptitude by RS Aggarwal.
Another good book for practice is "How to Prepare for Data Interpretation for CAT" by Arun Sharma
"Objective English for Competitive Examination" by Hari Mohan Prasad
Any Grammar book you have already read or felt comfortable.
"Word Power Made Easy" by Norman Lewis.
Words from newspapers which you find difficult.
For History, Geography and Science read NCERT from 8 to 12 standard.
For Economics Pratiyogita Darpan Special Economics Issue. This also includes international organizations. It includes various government schemes.
For Indian Polity refer to "Indian Polity" by M Laxmikanth. This is the bible of Indian Polity. It is a must buy a book. One supplementary book with you have to refer is The Indian Constitution by PM Bakshi. There are two books of PM Bakshi. Buy the smaller one.
For current affairs, the newspaper is the best source. Also, you can use any current affairs magazine Like Chronicle Civil Services or Wizard or Pratiyogita Darpan. But the best source still remains is newspapers. Also, search consolidated current affairs magazine such as Mahendra’s publication.
Social Issues refer to Social Issues and Institutions by Wizard Publication.