Trích dẫn APA

Magretta, J. (2012). Understanding Michael Porter: The essential guide to competition and strategy. Boston, Mass: Harvard Business Review Press.

Trích dẫn kiểu Chicago

Magretta, Joan. Understanding Michael Porter: The Essential Guide to Competition and Strategy. Boston, Mass: Harvard Business Review Press, 2012.

Trích dẫn MLA

Magretta, Joan. Understanding Michael Porter: The Essential Guide to Competition and Strategy. Boston, Mass: Harvard Business Review Press, 2012.

Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.