Math 563 - Probability - Books

The next two books are aimed at an audience that "requires a working knowledge of rigorous probability, but whose mathematical background may be insufficient to dive straight into advanced texts on the subject (Rosenthal)." The next four books are roughly similar in level to Durrett. Some more books:

Math 464/564 - Probability - Books

564 is a lower level course that does not use measure theory. I've listed some books at this level in case you have not take such a course and want to take a look at one of these.