Bob's nickname was “Elvis,” a 'reference to' the way he styled his hair. [=people called Bob “Elvis” because he styled his hair in the same way Elvis Presley did]
The course covers ancient history 'with' special 'reference to' the Roman Empire. [=the course is about ancient history and especially about the Roman Empire]
I have something further to add 'with reference to' [='with respect to', 'in regard to'] what was said earlier.
(..) Well, it's not complete, but it might get us something. Let me run it through the IAFIS database. I'll cross-reference these against the matches from my facial reconstruction. We found our victim. Klarissa Mott. years old (..)2015 TvShow: Bones Title: The Promise in the Palace Season: 11 Episode 7
(..) Look at that. How exciting! Which tooth? I don't know-- her front one. Uh, for future reference, this is the deciduous lower central incisor. Great, I'll remember that. Oh, and I told Christine the Tooth Fairy's (..)2015 TvShow: Bones Title: The Promise in the Palace Season: 11 Episode 7