Books
From Hulks & Husks Wiki
Kurx' Guide to Tactical Magic is a well-respected series of essays and treatises on military applications of arcane and divine magic. Kurx is a retired dwarven Shangon general. Volume 7 is subtitled Wild Magic.
The Misadventures of Tiffan is a mix of possibly-fictional travelogue and swashbuckling adventures, and nonfiction natural and paranatural history. The author/narrator is ostensibly a gnomish woman who has criss-crossed the continent of Oban on Tessera many times in search of treasure and wonders. It includes several stories and discussions of wild magic.