Unwanted comma after title

Hi all,

I have a problem with the title of a book in Endnote X8. It has no author, but that should not be a problem, should it?

The title of the book is entered into Endnote like this, between the quotation marks: “VIIIth Congres - The Hague 1938, General Reports”

However, when I quote this title in my Word document, it inserts a comma behind the title in front of the publishers information which is between brackets (). Normally, this does not happen with books. 

I use a slightly edited form of the Chicago 16th Footnote style.

Anybody have any idea how to solve this issue/why the comma is there in the first place?

Thanks in advance!