APA-viite (7. p.)

PORTER MICHAEL. (1990). COMPETITIVE ADVANTAGE OF NATIONS: WITH A NEW INTRODUCTION. THE FREE PRESS.

Chicago-viite (17. p.)

PORTER MICHAEL. COMPETITIVE ADVANTAGE OF NATIONS: WITH A NEW INTRODUCTION. NEW YORK: THE FREE PRESS, 1990.

MLA-viite (9. p.)

PORTER MICHAEL. COMPETITIVE ADVANTAGE OF NATIONS: WITH A NEW INTRODUCTION. THE FREE PRESS, 1990.