Dyfyniad APA

Porter, M. E. (1986). Competition in global industries. Harvard Business school.

Dyfyniad Arddull Chicago

Porter, Michael E. Competition in Global Industries. Boston: Harvard Business school, 1986.

Dyfyniad MLA

Porter, Michael E. Competition in Global Industries. Harvard Business school, 1986.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.