Penggayaan APA
PORTER, MICHAEL E.. (1980).
Competitive strategy, techniques for analyzing industries and competitors .
New York:
The Free Press.
Chicago Style
PORTER, MICHAEL E..
Competitive strategy, techniques for analyzing industries and competitors.
New York:
The Free Press,
1980.
Text.
MLA Style
PORTER, MICHAEL E..
Competitive strategy, techniques for analyzing industries and competitors.
New York:
The Free Press,
1980.
Text.
Turabian Style
PORTER, MICHAEL E..
Competitive strategy, techniques for analyzing industries and competitors.
New York:
The Free Press,
1980.
Print.