Hi,

MAT 2019 consists of five sections. Given below are books according to each section:

1. Language Comprehension

a. 'How to Prepare for Verbal Ability and Reading Comprehension for CAT' by Arun Sharma & Meenakshi Upadhyay (Published by McGraw Hill)

b. 'Verbal Ability and Reading Comprehension for the CAT' by Nishit K Sinha (Published by Pearson)

c. 'Word Power Made Easy' by Norman Lewis (Published by Pocket Books)

d. Editorial and short articles published in English news papers 

2. Intelligence and Critical Reasoning

a. 'A Modern Approach to Logical Reasoning' by R.S. Aggarwal (Published by S. Chand & Co.)

3. Data Analysis and Sufficiency

a. 'How to Prepare for Data Interpretation for CAT' by Arun Sharma (Published by McGraw Hill)

4. Mathematical Skills

a. 'How to prepare for Quantitative for the CAT' by Arun Sharma (Published by McGraw Hill)

b. 'Quantitative Aptitude for the CAT' by Nishit K.Sinha (Published by Pearson)

5. Indian and Global Environment

a. 'Manorama Year Book' by K. M. Mathew, Mammen Mathew (Published by Malayala Manorama Group)

b. Regular reading of The Hindu, ToI, India Today, Sports week etc.

For complete MAT prep in one guide, you can use the following books:

a. 'Mission MBA MAT Guide' by BS Sijwali and Tarun Goyal (Published by Arihant Books)

b. 'Study package for MAT' by Arun Sharma (Published by McGraw Hill)

c. 'Complete Guide for MAT and Other MBA Entrance Exams' by Deepak Agarwal, Mahima Agarwal (Published by Disha) 

d. 'MAT Score Accelerator' by Disha Experts (Published by Disha Publication)

You must also practice previous year MAT papers and give ample number of mocks.

Hope this helps.

Cheers!