Gaya APA
Porter, Michael E. (1995).
On competition .
Boston:
Harvard Business Riview Book.
Gaya Chicago
Porter, Michael E.
On competition.
Boston:
Harvard Business Riview Book,
1995.
Buku.
Gaya MLA
Porter, Michael E.
On competition.
Boston:
Harvard Business Riview Book,
1995.
Buku.
Gaya Turabian
Porter, Michael E.
On competition.
Boston:
Harvard Business Riview Book,
1995.
Buku.