APA (7. basım) Alıntı

Porter, M. E. (1998). On competition. Harvard Businesss School Publishing.

Chicago Style (17. basım) Atıf

Porter, Michael E. On Competition. Boston: Harvard Businesss School Publishing, 1998.

MLA (9th ed.) Atıf

Porter, Michael E. On Competition. Harvard Businesss School Publishing, 1998.