APA Style
Porter, Michael E.. (1985).
Competitive advantage : creating and sustaining superior performance .
New York:
Free Press.
Chicago Style
Porter, Michael E..
Competitive advantage : creating and sustaining superior performance.
New York:
Free Press,
1985.
Text.
MLA Style
Porter, Michael E..
Competitive advantage : creating and sustaining superior performance.
New York:
Free Press,
1985.
Text.
Turabian Style
Porter, Michael E..
Competitive advantage : creating and sustaining superior performance.
New York:
Free Press,
1985.
Print.