Porter, M. E. (1986). Competition in global industries. Harvard Business school.
Citazione stile Chigago Style (17a edizione)Porter, Michael E. Competition in Global Industries. Boston: Harvard Business school, 1986.
Citatione MLA (9a ed.)Porter, Michael E. Competition in Global Industries. Harvard Business school, 1986.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.