Ross, S. M. (2010). Introduction to probability models (10th ed). Academic.
Ross, S. M. (2014). A first course in probability (Ninth edition). Pearson Education Ltd. http://eu.alma.exlibrisgroup.com/view/action/uresolver.do?operation=resolveService&package_service_id=3037248150002418&institutionId=2418&customerId=2415
Stirzaker, D. (2005). Stochastic processes and models. Oxford University Press.