APA-viite (7. p.)

PORTER MICHAEL E. (1983). CASES IN COMPETITIVE STRATEGY. FREE PRESS.

Chicago-viite (17. p.)

PORTER MICHAEL E. CASES IN COMPETITIVE STRATEGY. NEW YORK LONDON: FREE PRESS, 1983.

MLA-viite (9. p.)

PORTER MICHAEL E. CASES IN COMPETITIVE STRATEGY. FREE PRESS, 1983.