Books on LibreOffice

Hi all,

I've been made aware of two different books on LO:
https://www.gitbook.com/book/chrissherlock1/inside-libreoffice/details
This is a dev book in progress by Chris Sherlock

This one was posted on the dev list by Jan
https://elpinguinotolkiano.wordpress.com/domando-al-escritor-2/
written in Spanish by Ricardo.

Should we add them to a page on the wiki for references? If yes, I can
do it, just let me know where.
Cheers
Sophie