books suggestion for exam
 

salam everyone..
i am a graduate student currently in usa and plan to appear in 2018 exams. some of my friends from pak suggested that i get recommended books mentioned in syllabus as those won't be available in pakistan, while some others suggested i follow the books that are available in pakistan as they cover almost every aspect of paper..
so my question is, should i get books here as getting books is not an issue or go with the regular indian authors available in pakistan. suggestion from members would be appreciated.
P.S: amazon does not ship to pakistan, so once i'm there, i'd have no choice but to go with the available books. also each recommended book cover like 20% of the paper, so one would need to study 5 6 books for one paper.