Indraprastha University Common Entrance Test (IPU CET)  is an exam conducted to take admissions in all courses of GGSIPU. For more notices regarding the exam click on this link: http://ipu.ac.in/admission2020ipucet.php

As per changing scenario and competition, only one book will not suffice. Try practicing as much as you can.
Get your hands at mock papers more and more. Only this will help you score a better rank.

hey,

here i am suggesting some good books for GATE 2021 civil branch

1. for engineering mathematics - discrete mathematics and its applications by kenneth rosen  , higher engineering mathematics by B.S grewal , advanced engineering by erwin kreyszig

2. for structural engineering - theory of structure by CK Wang , S.rammamrutham , theory of elasticity by timoshenko and gere , theory of structure by wilbur and norris , strength of materials/mechanics of structure by gere and timshenko , E.popove , L.singer , B.C punamia rammamrutham

3. for geotechnical - soil mechanics by gopal ranjan and rao , venkat ramaiha , S.K garg , B.C punamia , VNS murthy

4. water resources - water resources by SK garg, water and waste water by SK garg 1 and 2 , fluid mechanics - RK bansal and fox and richard

5. transportation engineering - transportation by justo khanna

for more details kindly go through the link

https://engineering.careers360.com/articles/what-are-best-books-for-gate-civil-engineering

all the best!