Burkan, W. C. (1996). Wide-Angle vision: Beat your competition by tocusing on fringe competitors, lost customers, and rogue employees. Wiley.
Citazione stile Chigago Style (17a edizione)Burkan, Wayne C. Wide-Angle Vision: Beat Your Competition by Tocusing on Fringe Competitors, Lost Customers, and Rogue Employees. New York: Wiley, 1996.
Citatione MLA (9a ed.)Burkan, Wayne C. Wide-Angle Vision: Beat Your Competition by Tocusing on Fringe Competitors, Lost Customers, and Rogue Employees. Wiley, 1996.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.