:I agree. But this is one of 30 student assignments, so I've done an initial triage on it before going on to the next, but certainly there are still some issues. Here I think it might be worth deleting the case reference, which does not add info, and stick with the de Hoog and/or the Onions text depending on the fact. I find it tough to work on text with in-line citation too, so I'm inclined to consolidate the references. But I don't have time to deal with it at the moment since 29 other articles beckon.