Practicing mock tests and practice papers is a must if you aim to crack the exam. And coming to the question now, then Self Study Guide BBA/BBS/BBM
Entrance Examination 2018 With General Knowledge 2019 Arihant by
ARIHANT PUBLICATION , Guide for BBA/BBS/BBM 2018 by
Arihant Publications, BBA/BBS 19 Practice Sets for
Entrance Examinations by G.K. Pub. These are some of the well known books available.
Do refer to them and stay dedicated and give your best.
Best wishes. Thank you.