Jack Fleitman is a recognized Mexican business author. His book Negocios Exitosos: Cómo iniciar, administrar y operar un negocio de forma exitosa (or similar titles in his series on entrepreneurship) is a copyrighted work. The inclusion of in your keyword strongly suggests a search for a specific digital copy — often the 12th chapter or a 12-page summary — which is frequently shared without permission on file-sharing sites.