I'm looking for a good text book that covers Probability. Here is the course description and link to the course:

http://www.ucalendar.uwaterloo.ca/1011/COURSE/course-STAT.html#STAT230

The laws of probability, discrete and continuous random variables, expectation, central limit theorem.

The course itself does not have a recommended text book so one is not required to do well in the course, but I'd still like to have one if possible. I am not taking this course until May so there is no rush.