- Das [Haskell Wikibuch](http://en.wikibooks.org/wiki/Haskell/Category_theory)
hat anschauliche Abbildungen
- [Category Theory](http://www.haskell.org/haskellwiki/Category_theory) im
Haskell Wiki hat auch gute Links zu anderen Ressourcen
- [Categories from scratch](http://science.raphael.poss.name/categories-from-scratch.html), beinhaltet ein paar praktische Beispiele
- Pierces [Great Works in PL](http://www.cis.upenn.edu/~bcpierce/courses/670Fall04/GreatWorksInPL.shtml) Liste.
## Bücher
- [Quora Frage: What is the best textbook for category theory?](http://www.quora.com/Category-Theory/What-is-the-best-textbook-for-Category-theory?share=1) Kmett's recommendations
- [Awodey](http://ukcatalogue.oup.com/product/9780199237180.do) und