The inconsistencies within the OU about references/citations/how to term them etc is a big issue. I have now finished 2 courses and am currently doing another 2 with an overlap and I am finding that most courses have this problem with different tutors expecting different things.
On the other hand my friend's daughter asked me to read her first uni essay, which I did and found lots of things that I considered wrong, but that is the way her tutor wanted it written??
I think the best advice I can give on this is to check with your own tutor exactly what they want and then ignore what other peoples tutors say. It is your personal tutor that is marking your essay!
The only time you have to be careful is when it is the ECA as your tutor doesn't mark that, so then I would write everything out in full, any thing in brackets i.e (Study Topic 5, p. 16) doesn't count towards word count, just to be on the safe side
