Gaya APA
Porter, Michael E.. (1998).
On Competition .
Boston:
Harvard Business Review Press.
Gaya Chicago
Porter, Michael E..
On Competition.
Boston:
Harvard Business Review Press,
1998.
Text.
Gaya MLA
Porter, Michael E..
On Competition.
Boston:
Harvard Business Review Press,
1998.
Text.
Gaya Turabian
Porter, Michael E..
On Competition.
Boston:
Harvard Business Review Press,
1998.
Print.