APA Style
Porter, Michael E.. (1985).
Competitive advantage: creating and sustaining superior performance (1st ed).
New York:
The Free Press.
Chicago Style
Porter, Michael E..
Competitive advantage: creating and sustaining superior performance.
1st ed
New York:
The Free Press,
1985.
BUKU.
MLA Style
Porter, Michael E..
Competitive advantage: creating and sustaining superior performance.
1st ed
New York:
The Free Press,
1985.
BUKU.
Turabian Style
Porter, Michael E..
Competitive advantage: creating and sustaining superior performance.
1st ed
New York:
The Free Press,
1985.
BUKU.