APA ציטוט

Magretta, J., & Joan Magretta. Understanding Michael Porter: The essential guide to competition and strategy. Boston, Mass: Harvard Business Review Press.

Trích dẫn kiểu Chicago

Magretta, Joan, và Joan Magretta. Understanding Michael Porter: The Essential Guide to Competition and Strategy. Boston, Mass: Harvard Business Review Press.

ציטוט MLA

Magretta, Joan, và Joan Magretta. Understanding Michael Porter: The Essential Guide to Competition and Strategy. Boston, Mass: Harvard Business Review Press.