My first reaction was: Oops! I don't have a TOC field, or if I do, I don't know where it is. All I did was just apply the appropriate heading style to each heading after I typed it, and the document map got built. Then I decided to consult Help and found out that all I have to do is click the Table of Contents button. Then I was able to simply cut and paste the table of contents that it built for me into the document where I need to cite it. So thanks.

P.S. I still don't see an actual Table of Contents 'field', though.