1. Advanced grammar in use: a self-study reference and practice book for advanced learners of English, with answers and CD-ROM Hewings, Martin. Cambridge : Cambridge University Press, 2013. ENG111
2. Social inequality: patterns and processes Marger, Martin N., 1939- New York, NY : McGraw-Hill, a business unit of The McGraw-Hill Companies, Inc., [2013] SOC206
3. Authentic happiness: using the new positive psychology to realize your potential for lasting fulfillment Seligman, Martin E. P. New York : Atria Paperback, 2013. PSY209
