Cita APA

Porter, M. E. 1., & Porter, M. E. 1. (2008). On competition (update and expanded edition.). Boston, Massachusetts: Harvard Business School.

Citación estilo Chicago

Porter, Michael E. 1947-, y Michael E. 1947- Porter. On Competition. update and expanded edition. Boston, Massachusetts: Harvard Business School, 2008.

Cita MLA

Porter, Michael E. 1947-, y Michael E. 1947- Porter. On Competition. update and expanded edition. Boston, Massachusetts: Harvard Business School, 2008.