Gaya APA
Porter, Michael E.. (1980).
Competitive Strategy Techniques for Analyzing Industries and Competitors .
New York:
Simon & Schuster Inc..
Gaya Chicago
Porter, Michael E..
Competitive Strategy Techniques for Analyzing Industries and Competitors.
New York:
Simon & Schuster Inc.,
1980.
Text.
Gaya MLA
Porter, Michael E..
Competitive Strategy Techniques for Analyzing Industries and Competitors.
New York:
Simon & Schuster Inc.,
1980.
Text.
Gaya Turabian
Porter, Michael E..
Competitive Strategy Techniques for Analyzing Industries and Competitors.
New York:
Simon & Schuster Inc.,
1980.
Print.