Hello Yjoleen,
The difference between a Book Section, and an Edited Book is that a book section is intended to be used for a Chapter of a book, and the Edited Book type is to be used for an entire volume that has been edited, rather than a single section/chapter.
In most cases, you should probably be using Book Chapter, but it’s certainly odd that the “In” is missing.
It’s possible that it may be incorrectly tied to the Editor field. If that is the case, then a chapter without editors would end up with that value being dropped.
If you change to a different style, does the same issue occur?
Which output style are you using to format this document?
It may be that there is a smalll change required to the style before that In appears, but it’s likely specific to the style that you’re using.
Please let me know.
Thanks!
Steve