Gaya APA
Walker, Gordon. (1944).
MODERN COMPETITIVE STRATEGY .
America:
Mc Graw-Hill.
Gaya Chicago
Walker, Gordon.
MODERN COMPETITIVE STRATEGY.
America:
Mc Graw-Hill,
1944.
Text.
Gaya MLA
Walker, Gordon.
MODERN COMPETITIVE STRATEGY.
America:
Mc Graw-Hill,
1944.
Text.
Gaya Turabian
Walker, Gordon.
MODERN COMPETITIVE STRATEGY.
America:
Mc Graw-Hill,
1944.
Print.