Hi! For context, I'm planning on applying for E&M at Oxford, EFDS at Imperial and pure Economics at LSE, UCL and Warwick. I know a lot of people tend to mention books that they have read and I have mentioned 3 books in my personal statement, but is it ok to also refer to academic papers? I talk about a couple of essay competitions I entered in my personal statement and give my opinions about a couple of academic papers I looked at for those essay competitions. Is that ok? I've seen that a lot of people just refer to books, so I don't know if it's strange to mention research papers too.
Also do universities prefer if you mention books from their reading lists? I've only mentioned 1 book from Oxford's reading list and the rest are books I've just found on my own that aren't from any reading lists.