Stephen Abbott, <a href="http://books.google.com/books?id=7t1ZhUAc5yMC">*Understanding Analysis* </a><br/> Strongly recommended to students who are ony getting to grips with abstraction in mathematics. Find a review [here][1]. [1]: http://web.archive.org/web/20090421014042/http://maa.org/reviews/understand.html