Dear 

You can purchase any publishers book from any bookshop and in that book only who will find the syllabus also if you still not satisfy then in order to confirm same you can check on website itself. Also there is no as such best book as it depends upon the student itself that which book he / she interprets better.

Thanks for query

For BA LLB entrance examinations, go for the following books.

1. Study Package for Clat and LLb by A P Bhardwaj
2. Universal's Guide to CLAT & LL.B. Entrance Examination 2017-18
3. Compulsory English for Civil and Judicial Services