Bibliografia
Principal
- Universal Algebra: C. Bergman 2011 Fundamentals and Selected Topics, Chapman & Hall
- A Course in Universal Algebra: S. Burris e H. P. Sankappanavar 2012 pre-edition by Springer-Vwerlag
- Introduction to Lattices and Order: B.A. Davey e H.A. Priestley 2002 Cambridge University Press