There are several books available in market for PGCET Textbook. Here I am suggesting you for best books:

Best Textbook for PGCET Entrance Exam:
KARNATAKA ME/M.TECH PGCET COMPUTER SCIENCE Paperback – 2014
by chandresh agrawal's (Author)
Rs. 400/-
Product details
Paperback
Publisher: priyanka prakashan; 2 ND EDITION edition (2014)
ASIN: B00KCNPK2I

Karnataka PGCET Electronics Paperback – 2017
by priyanka prakashan (Author)
Rs. 333/-
Product details
Paperback
ASIN: B071YDJWS4

GATE and PGECET for Computer Science and Information Technology Paperback – 2014
by Ramaiah D (Author)
Rs. 484/-
Product details
Paperback: 568 pages
Publisher: Prentice Hall India Learning Private Limited (2014)
Language: English
ISBN-10: 8120349814
ISBN-13: 978-8120349810

Karnataka PGCET Mechanical Paperback – 2017
by priyanka prakashan (Author)
Rs. 369/-
Product details
Paperback
ASIN: B071DCBK3Z

KARNATAKA ME/M.TECH PGCET MECHANICAL ENGG Paperback – 2014
by chandresh agrawal's (Author)
Rs. 399/-
Product details
Paperback
Publisher: priyanka prakashan; 2 ND EDITION edition (2014)
ASIN: B00KCNQ77A