If you need the most suitable study materials for the target college, you'd better find classmates or friends from that school to go to their school's copywriting agency to find professional topics for postgraduate entrance examination over the years. Generally speaking, the topics of professional courses are similar every year, and the basic topics are the same. As for reference books, you just need to see through what he asks and do more real test papers over the years. There is no need to look at anything else. It's too late to review after the initial test of advanced mathematics, so there's no need to look at it too early. The second test is often a formality. Don't look too heavy. The first exam is the most important.