Gaya APA
Porter, Michael E. (2004).
Competitive advantage: creating and sustaining superior performance .
New York:
The The Free Press.
Gaya Chicago
Porter, Michael E.
Competitive advantage: creating and sustaining superior performance.
New York:
The The Free Press,
2004.
Buku.
Gaya MLA
Porter, Michael E.
Competitive advantage: creating and sustaining superior performance.
New York:
The The Free Press,
2004.
Buku.
Gaya Turabian
Porter, Michael E.
Competitive advantage: creating and sustaining superior performance.
New York:
The The Free Press,
2004.
Buku.