Hi guys, I was working in a project in the year 2012-2013. I mailed my project manager for a reference letter. As far as I know a colleague of mine told me, he won't provide me a letter as he doesn't remember my job duties. I am still in touch with my colleagues. Can I get a letter from 2 of my colleagues, regarding my experience. Do I need to get any other documents from my colleagues to show that the were employed during the same year I was, since they are no longer working at that place. How to I make a strong case to the official?