IMDb: Per qualche dollaro in più - Cast/credits plus additional information about the film. - http://us.imdb.com/title/tt0059578/
Allwatchers Review - For A Few Dollars More - Analytical review of the plot, setting, theme, and structure of the film starring Clint Eastwood and Lee Van Cleef, and links to similar movies. - http://www.allwatchers.com/Topics/Info_6511.asp