I've been working as a software engineer at a government organization for ten years since graduation. Now I am looking for a new job and i need to work on my resume. There is one minor detail i am not sure about. I am a computer science graduate from a reputable university in my country (Turkey). Between 2007 and 2009 i attended a master's program and completed courses with 3,56/4 GPA. The courses i completed were strongly related with my career and work. Unfortunately i couldn't continue to thesis phase because of my work load. My question is whether i should include this information in my resume or not. Would i look like a quitter or someone with valuable knowledge about his field? Thank you.