APA Style
Porter, Michael E.. (1980).
Competitive strategy: techniques for analyzing industries and competitors (1st ed).
New York:
The Free Press.
Chicago Style
Porter, Michael E..
Competitive strategy: techniques for analyzing industries and competitors.
1st ed
New York:
The Free Press,
1980.
BUKU.
MLA Style
Porter, Michael E..
Competitive strategy: techniques for analyzing industries and competitors.
1st ed
New York:
The Free Press,
1980.
BUKU.
Turabian Style
Porter, Michael E..
Competitive strategy: techniques for analyzing industries and competitors.
1st ed
New York:
The Free Press,
1980.
BUKU.