You say… it’s hard to know which are reference only books

We say…
1. Use Library Search to locate the item you’re looking for – and remember to sign in to see full details, that includes which are reference only (meaning you can just use them in the library but not borrow them) copies!
2. When you sign in you can see which books are available to borrow, which are on loan and which are ‘not loanable’

3. And this is what the books look like on the shelf