Magretta, J., & Joan Magretta. Understanding Michael Porter: The essential guide to competition and strategy. Boston, Mass: Harvard Business Review Press.
استشهاد بنمط شيكاغوMagretta, Joan, و Joan Magretta. Understanding Michael Porter: The Essential Guide to Competition and Strategy. Boston, Mass: Harvard Business Review Press.
MLA استشهادMagretta, Joan, و Joan Magretta. Understanding Michael Porter: The Essential Guide to Competition and Strategy. Boston, Mass: Harvard Business Review Press.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.