I was asked to post this from the GD board. It is a suggestion of books for a Mexican dad that's reluctant to look into non-spanking methods of child rearing.
How about getting him the books by Carlos González? One is called Bésame Mucho and it's pretty general in content but gives a great overview on gentler ways to parent. The author is from Spain. He has another one on lactation that I think is called Un regalo para toda la vida. And there's one about feeding issues called Mi niño no me come. They are all excellent and pretty easy reads.
Hope that helps.