Board Thread:Wiki-Related Discussion/@comment-4975807-20140427201855/@comment-24304025-20140429162851

Firstly, what will be ugly?!

Then, of course books are canon. But Horowitz saying that doesn't mean he (or anyone) considers the book as an episode. There is no point in saying the book is someone's latest appearance/mention or I could say the magazine is or an interview is or anything "canon" said by a crew member.

We either use only episodes or we include specials as well. The books are not in-show info, it does not belong to a season and it is just extra media content.