APA citiranje

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.

MLA citiranje

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