Should you cite somebody's Transfer Report? (Confirmation Report) Context: At UK universities at least, before progressing from the first year of your PhD  (or transferring from an MPhil to a PhD), it is required to write a fairly substantial report detailing the research done so far and the outline the research direction over the remainder of the PhD. It's usually known as the Transfer/Confirmation/Upgrade Report.

Is it appropriate to reference these kinds of reports when writing: a) Your own Transfer Report, and b) Published research articles? I have never come across one referenced in a paper before, whereas I have seen references to PhD theses, Masters, and undergraduate dissertations.
If it is published somewhere, then you should feel free to cite it. However, if it's not, then you have a challenge. You might cite it as, more or less, "Author. Title. Transfer Report, University, Year. (unpublished personal communication)" Which indicates that you friend or colleague gave you a copy in which you first found the information you are referencing. 

I think such an approach gives your colleague credit and gives readers at least some hope of being able to track down a copy if they want to verify your claims about what it says.