In-text citation with curly brackets and a number

I am trying to edit my dissertation proposal, and when my new in-text citations look like this:

{Coleman, 1990 #203}

It also doesn’t go to the reference list at the bottom…

What is this and how do I fix it?

I’ve had it happen before and had to copy the whole document, delete all the references, and re-enter them by hand.

Please help?  

duplicate post