The Age of Migration

"This is the classic textbook. Stephen Castles has been going since the 1970s or early 1980s. When I was a student I read his books and that was a long time ago. It’s a comprehensive view of how important immigration is, what drives it, push-pull theories and so on. It’s now in its fifth edition. If you want one book to read about the theory of immigration, the background to it, this is the best — apart from my book of course. All my book choices are readable, none of them are only for economists."