Category:Publications which can't be cited on in-universe pages

The publications listed below have been deemed secondary sources by our canon policy. Consequently, they may not be used in the main in-universe section of in-universe pages. They can only be cited in the "behind the scenes" section, or, more usually, on pages that are clearly labelled as "real world" pages.

When citing one of these references, the prefix REF is the most appropriate.