Tohutoro APA (7th ed.)

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

Tohutoru Kātū Chicago (17th ed.)

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

Tohutoro MLA (9th ed.)

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