APA (7. basım) Alıntı

PORTER MICHAEL E. (1998). ON COMPETITION. HARVERD BUSINESS SCHOOL.

Chicago Style (17. basım) Atıf

PORTER MICHAEL E. ON COMPETITION. BOSTON: HARVERD BUSINESS SCHOOL, 1998.

MLA (9th ed.) Atıf

PORTER MICHAEL E. ON COMPETITION. HARVERD BUSINESS SCHOOL, 1998.