Sources Here is a list of some books that I have collected that might be of interest for your own further research. Share this:ShareClick to share on LinkedIn (Opens in new window)Click to email a link to a friend (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Facebook (Opens in new window)Like Loading...