Ah, right... you want to "Conflate refeences".

This can be done for Index entries, but I am not sure the Table Generator
supports it for bibiographies.

For only half a page, I am sure you will find it quicker to simply type what
you want to see into the text, than to go on a lengthy hunt for ways to make
Word do this.

Essentially, you can add a Bookmark that fully encases the section you want
to refer to.  You then insert a reference to the bookmark, which will appear
with a range of page numebers: Pages 21-29.

However, in service I find bookmarks a bit fragile, particularly if a
document has to be edited by users who do not know they're there.  It's only
worth it if you publish books for a living all day every day, and you live
in an office where you are surrounded by publishing professionals, who know
to check the instructions for complex special procedures before opening a
book file.

If you don't have a staff of experts, I would type it :-)

Cheers