Hello Candidate,

There are several guide books and reference books available for Polytechnic common entrance test examination but here are some of them which I fill are really good and might be of your interest-

1. Ramesh Polytechnic C.E.T. Guide

2. Arihant Uttaranchal Polytechnic Entrance Exam

3. Ramesh Diploma Engineering

4. POLYCET - 2020 (SBTET) Mathematics

5. Oswaal Chapter Wise Solutions Polytechnic

Hope you found it helpful. If you have any further queries feel free to post it here!!